Guide:Blood Moon strategies
A Blood Moon is a common randomly occurring event that takes place over the course of an entire night; however, a Blood Moon can also be initiated when the player uses a Bloody Tear(Desktop, Console and Mobile versions). Blood Moons are signaled by the message "The Blood Moon is rising..." in the lower left corner of the screen (or the top middle of the screen on Mobile).
A Blood Moon will only occur if at least one player in the world has more than 120 health, and only on nights when a moon is present (any night except a new moon). Given those criteria, a Blood Moon has a 1/9 (11.11%) chance of occurring. It will also not spawn if another event is currently taking place, such as Lantern Night(Desktop, Console and Mobile versions) or Slime Rain(Desktop, Console and Mobile versions). Weather-related occurrences (like Windy Days(Desktop, Console and Mobile versions) or Thunderstorms(Desktop, Console and Mobile versions)) do not count as events, so there can be crossovers.
Contents
This content is transcluded from Blood Moon § Contents.
Vile Powder(If world has Corruption)
Corrupt Seeds(If world has Corruption)
Corrupt Grass Wall(If world has Corruption)
Vicious Powder(If world has Crimson)
Crimson Seeds(If world has Crimson)
Crimson Grass Wall(If world has Crimson)
Purple Solution(If world has Corruption)
Red Solution(If world has Crimson)
NPC quotes
Some NPCs display unique quotes during a Blood Moon when spoken to:
NPC | Quotes |
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When a quest is available:
When a quest has been completed:
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"I love nights like tonight. There is never a shortage of things to kill!" "Man, it's a good night not to talk to anybody, don't you think, <name of player>?" |
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"... we have a problem! It's a Blood Moon out there!"[sic] |
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"Hey, have you seen a clown around?" "There was a bomb sitting right here, and now I can't seem to find it..." "I've got something for them zombies alright!" |
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"I sell what I want! If you don't like it, too bad." "Why do you have to be so confrontational during a time like this?" "I don't want you to buy my stuff. I want you to want to buy my stuff, ok?" "Dude, is it just me or is there like a million zombies out tonight?" |
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"The blood stains on my club? Have you seen the zombies outside?!" "I don't know what's scarier, a Blood Moon or my sister during a Blood Moon!" |
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"You can tell a Blood Moon is out when the sky turns red. There is something about it that causes monsters to swarm." "Hey, buddy, do you know where any deathweed is? Oh, no reason; just wondering, is all." "If you were to look up, you'd see that the moon is red right now." |
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"All I want is for the switch to make the... What?!" "Oh, let me guess. Didn't buy enough wire. Idiot." "Just-could you just... Please? Ok? Ok. Ugh." "I don't appreciate the way you're looking at me. I am WORKING right now." |
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"Have you seen Chith...Shith.. Chat... The big eye?" "Hey, this house is secure, right? Right? <Name of player>?" "Not even a Blood Moon can stop capitalism. Let's do some business." "Keep your eye on the prize, buy a lens!" "Oh, great. I can hear <name of Mechanic> and <name of Nurse> arguing from here." (if the respective NPCs are present) |
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When the player is not moderately injured (≥66% health):
When the player is moderately injured (<66% health):
|
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"The rivers are running red, everyone seem awfully on edge, hmm... it's a trying night, indeed!" |
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"I'm feeling a bit peevish as of late, so enough with your palaver you ragamuffin!" |
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"Tipping IS optional, but remember I have access to scissors and your head." "This is a cut-throat razor by the way." "You better stay outta my hair tonight, hun. I just sharpened my scissors, and I'm looking for an excuse to use them!" |
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"You know, where I'm from, a Blood Moon is actually just an excuse to get some fresh air." |
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"Grrr!! Away. Stay. NOW!" "Rawgh! Roo! Danger. Me. Wraaaath!" |
Effects
While a Blood Moon is active, multiple effects can happen:
This content is transcluded from Blood Moon § Effects.

Enemies
- The spawn rate of enemies on the surface increases. Not only do they spawn faster, but more are spawned than can normally exist on-screen at once.
- This works no matter the environment, so for example Corruption and Crimson enemies can swarm more than they normally would.
- It only affects spawn rates above the surface. Spawn rates below the surface remain the same.[1]
- Enemies can spawn near towns, even though those normally suppress enemy spawns.
- Zombies and their counterparts become able to open Doors.
- Goldfish, Bunnies, and Penguins turn into Corrupt Goldfish, Corrupt Bunnies and Corrupt Penguins in Corruption worlds, or Vicious Goldfish, Vicious Bunnies and Vicious Penguins in Crimson worlds.
Visual effects
- A red filter will be applied to the screen, shifting the colors of all entities and light towards red and purple shades. Some of the unique effects of this filter are listed below:
- The filter will also alter the projectile colors of many weapons.
- Placed Living Cursed Fire Blocks turn yellow, creating a unique effect.
- The Glowing Mushroom Biome, which is normally blue, will appear pink-purple because of the red shader.
- Almost all water will turn red, including rain.
- The Oceans will not turn red, though it will be affected by the screen filter, turning it a purple-ish color.
Other effects
- Deathweed blooms during a Blood Moon.
- Blood Moons and Full Moons are the only times Deathweed Seeds can be harvested from Deathweed (with the exception of using a Staff of Regrowth).
- The Zoologist NPC will transform into her werefox form.
Preparation
General tips
This content is transcluded from Guide:Practical tips § Combat.
- For nocturnal bosses, starting the battle just after the sun sets (7:30 PM) will provide the maximum amount of time to defeat the boss. In Hardmode, the
Moon Charm and/or
Moon Stone and their upgrades are also useful at night.
- Boss battles can be won or lost before the battle ever starts. Choose your equipment and have it ready; find and/or make potions and placed buffs; use the highest-tier food you have available; set up an arena appropriate to the boss; learn the strategies for the boss you're facing.
- Prepare your Boss-fighting arena with adequate lighting,
Campfires and
Heart Lanterns for health regeneration, and
Stars in Bottles for mana regeneration if you use magic.
Bast Statues(Desktop, Console and Mobile versions) will provide a significant defensive boost.
Garden Gnomes(Desktop, Console and Mobile versions) and (Desktop, Console and Mobile versions) (if underground) proper torch placement will reduce damage taken and increase damage dealt due to the luck. The Torch God's Favor(Desktop, Console and Mobile versions) helps with this.
Honey pools can also be used for extra health regeneration.
- (Desktop, Console and Mobile versions)
Sunflowers provide the
Happy!(Desktop, Console and Mobile versions) buff to nearby players, which grants a +10% movement speed bonus and 17% reduction in enemy spawn rate.
- Always carry around a stack of the highest-tier healing potion available, as relying only on natural Health Regeneration is not a good idea. Depending on the game stage, this can include items such as
Lesser Healing Potions or
Honeyfins. On the
Desktop,
Console, and
Mobile versions,
Restoration Potions are healing potions with a shorter cooldown.
- Likewise, carry mana potions if you use Magic.
- The
Strange Brew(Desktop, Console and Mobile versions) is also an option, which yields very similar healing abilities to Healing Potion with added chances to trigger periods of invulnerability upon consumption.
- On the
Old-gen console version and Nintendo
version, Restoration Potions can save a slot, but will likewise trigger both cooldowns.
- It is suggested to build houses for the
Dryad and the
Nurse NPCs in your arena. The former casts the
Dryad's Blessing(Desktop, Console and Mobile versions) buff, which increases your defense and provides you with a thorns-like effect, while the latter can heal and remove debuffs instantly, at the cost of some
coins.
- Bosses are displayed on the Minimap: Follow the boss's icon to track it when you're struggling to find it. You can identify the boss icons by checking their respective wiki pages.
- Once you have freed the
Mechanic in the Dungeon, you can use
Wire to enhance your arena with
Traps and helpful
Heart and
Star Statues. The former helps to damage the enemies, though be careful to set them up correctly in order not to hurt yourself during the battle. The latter will spawn heart and star pickups, respectively. Connect these devices to
timers to activate them infinitely.
- It may be useful to summon and kill the Eye of Cthulhu or King Slime before summoning any harder boss in order to spawn an extra one-use pool of Hearts. Note that this will take up a big chunk of the spawnable healing Hearts, which will cause Heart Statues to not spawn as many/any Hearts.
- Remember to use the
Sharpening Station(Desktop, Console and Mobile versions),
Ammo Box(Desktop, Console, Old-gen console and Mobile versions),
Crystal Ball,
Bewitching Table(Desktop, Console and Mobile versions),
War Table(Desktop, Console and Mobile versions), and
Slice of Cake(Desktop, Console and Mobile versions) before you go to explore or battle bosses/invasions. These will give boosts that are useful to have, with the first five being class-specific. They give
Sharpened(Desktop, Console and Mobile versions),
Ammo Box(Desktop, Console, Old-gen console and Mobile versions),
Clairvoyance,
Bewitched(Desktop, Console and Mobile versions),
Strategist(Desktop, Console and Mobile versions), and
Sugar Rush(Desktop, Console and Mobile versions), respectively.
Arena
Due to town NPCs being vulnerable to enemies during this event, it is recommended that you make your base above ground level at the beginning. If you have already made a base, a simple barricade of a block or some kind of furniture (such as a Work Bench) behind a door will prevent most enemies from getting in. The increased enemy spawn rate will result in more Wraiths spawning in Hardmode, which can be a nuisance; however, they can only move upward if they're inside a block, and hover or move downward otherwise.
A simple ditch around or below your base can take care of most ground level mobs, including Clowns. Even better, line the bottom of the ditch with lava and it will kill them for you. You will want to place a thin layer of lava in the ditch -- about a single Lava Bucket -- enough to damage enemies but not burn the coins and items they drop. As mentioned above, traps can make the arena even deadlier when used correctly. Keep in mind that Dripplers and similar, unrelated enemies (such as Demon Eyes) can hover and fly above your defenses.
If you do not want to build an arena (or are simply unprepared), you can also stay safe in your house while using weapons that attack through blocks (like the Vilethorn in pre-Hardmode or
Crystal Vile Shard in Hardmode), or minions and sentries to attack incoming mobs.
Gearing Up
Pre-Hardmode
Armor
Silver or
Tungsten armor should be used at the bare minimum.
Gold or
Platinum armor provide more defense, but are harder to obtain.
- If the Eater of Worlds or Brain of Cthulhu have been defeated,
Shadow or
Crimson armor are both good options because they provide a mobility increase and increased regeneration, respectively.
Molten armor is a good option for Melee users, but it requires a visit to the Underworld after the evil biome boss has been defeated.
- Rangers can use
Fossil armor(Desktop, Console and Mobile versions), although they need to stop by the Underground Desert for it.
Meteor armor and
Jungle armor are useful for Mages.
- A Mage can also use the
Wizard set with Meteor Leggings or Jungle Pants.
- A Mage can also use the
- Summoners can use the
Flinx Fur Coat(Desktop, Console and Mobile versions) if no bosses have been defeated.
- If the player has defeated the Queen Bee,
Bee armor(Desktop, Console, Old-gen console and Mobile versions) can also be used to increase minion slots.
Obsidian armor(Desktop, Console and Mobile versions) is another alternative that gives boosts to whip speed and range. However, it has the same requirements as Molten armor.
- If the player has defeated the Queen Bee,
Weapons
For Melee users:
- The
Enchanted Sword is useful as it has high damage for its obtainment method and shoots a projectile. If it is unavailable, the
Blade of Grass,
Volcano or
Light's Bane/
Blood Butcherer can also be used.
- The
Hive-Five(Desktop, Console and Mobile versions) is useful for dealing damage while under cover. If it has not been obtained, the
Code 1(Desktop, Console and Mobile versions) and
Amazon(Desktop, Console and Mobile versions) are good backups.
- As enemies come in mass hordes, the
Storm Spear(Desktop, Console and Mobile versions) or
The Rotted Fork can be used to pierce multiple enemies.
- The
Ball O' Hurt or
The Meatball can be used to disrupt enemy lines.
For Rangers:
- The best bows available in the early game are the
Demon Bow and the
Tendon Bow, both of which should be used with
Jester's Arrows. However, if Queen Bee has been defeated,
The Bee's Knees(Desktop, Console and Mobile versions) is an excellent option that should be used with
Wooden Arrows.
- While all guns available at this point lack any pierce, the
Minishark has a rapid rate of fire. The
Boomstick and the
Quad-Barrel Shotgun(Desktop, Console and Mobile versions) can be used against crowds from above due to their bullet spread.
- Despite its ammunition being tedious to gather in large quantities, the
Star Cannon is a strong weapon due to its high damage.
For Mages:
- The
Ruby Staff and the
Diamond Staff are the best gem staves available.
- A decent alternative for the gem staves, if you can't get one for any reason, is the
Thunder Zapper(Desktop, Console and Mobile versions).
- A decent alternative for the gem staves, if you can't get one for any reason, is the
- The
Vilethorn is useful for piercing damage. In Crimson worlds, the
Crimson Rod can be used to deal chip damage to enemies from inside your base, although the cloud cannot pass through blocks.
- The
Space Gun has a rapid rate of fire. It also costs no mana when paired with full Meteor armor.
- The
Demon Scythe is dropped by
Demons and
Voodoo Demons, but a powerful option for crowd control.
For Summoners:
- The
Snapthorn(Desktop, Console and Mobile versions) is a strong whip option that can inflict crowds with the
Poisoned debuff. The
Leather Whip(Desktop, Console and Mobile versions) is a weaker option, but is safer to obtain.
- Any minion can be used to attack from shelter, but some good options include the
Finch Staff(Desktop, Console and Mobile versions),
Flinx Staff(Desktop, Console and Mobile versions) and
Imp Staff(Desktop, Console, Old-gen console and Mobile versions), although the Imp requires a dangerous trip to the Underworld.
- Sentries are also useful for the purpose mentioned above. The
Ballista Rod(Desktop, Console and Mobile versions) is a powerful option, but the
Lightning Aura Rod(Desktop, Console and Mobile versions) can also be used to inflict chip damage.
- Keep in mind that you will need to defeat the Old One's Army event at least once to gain the ability to use the Tavernkeep sentries outside the event, however.
Accessories
- Any extra jump bottle, such as the
Cloud in a Bottle or the
Sandstorm in a Bottle, is great for mobility. If you can, combine them with a
Shiny Red Balloon, then further with a
Lucky Horseshoe if fall damage is a problem.
- Running boots, like the
Hermes Boots or the
Flurry Boots, are a great accessory to have, allowing you to more easily get away from crowds of enemies. Hooks are also useful for this purpose.
- Once you have the
Goblin Tinkerer, you can combine your running boots with
Rocket Boots to make
Spectre Boots, then further with an
Anklet of the Wind and an
Aglet to make
Lightning Boots. You can also see this guide on how to further upgrade them into Terraspark Boots.
- Unlike other running boots, the
Sailfish Boots(Desktop, Console and Mobile versions) can also be combined with the
Frog Leg to create
Amphibian Boots(Desktop, Console and Mobile versions), a viable alternative to Terraspark Boots.
- Unlike other running boots, the
- Once you have the
- If you are playing on Expert Mode or higher difficulties, the
Shield of Cthulhu(Desktop, Console and Mobile versions) can help with quick evasion and extra damage.
- The
Worm Scarf(Desktop, Console and Mobile versions) or
Brain of Confusion(Desktop, Console and Mobile versions) are also great survivability accessories.
- The
- Once you've gotten your hands on it, the
Shark Tooth Necklace(Desktop, Console and Mobile versions) is a good increase to DPS, especially on higher difficulties.
Feral Claws can be used by both Melee users and Summoners.
- If a Mage does not mind the
Mana Sickness(Desktop, Console, Old-gen console and Mobile versions) debuff, a
Mana Flower will allow them to continuously use weapons for as long as they have mana-restoring potions.
- In Corruption worlds, the
Magic Cuffs are a good alternative otherwise.
- In Corruption worlds, the
- Summoners should use the
Pygmy Necklace as it provides a valuable extra minion slot. This requires defeating Queen Bee, however.
Potions
This applies to both pre-Hardmode and Hardmode.
- Food items will grant the
Well Fed,
Plenty Satisfied(Desktop, Console and Mobile versions) or
Exquisitely Stuffed(Desktop, Console and Mobile versions) buffs, which give helpful stat boosts.
Ironskin Potions,
Endurance Potions and
Regeneration Potions will help tremendously with survivability.
Swiftness Potions will aid in your dodging.
Ammo Reservation Potions and
Archery Potions are good for Rangers.
Magic Power Potions and
Mana Regeneration Potions are must have for Mages.
- If you already have a minion, a
Summoning Potion lets you bring an extra one to the fight.
Rage Potions or
Wrath Potions are useful for almost all classes. The Rage Potion does not affect minions and sentries, however.
Hardmode
Armor
- Most of the early Hardmode ore armor sets, with the corresponding head piece, are fairly effective for dealing with this event:
Palladium armor provides good regeneration, useful when retreating back to your base at low health.
Mythril armor is stronger than Adamantite armor for Melee users, despite having lower defense.
Orichalcum armor is a good option for crowd control.
Adamantite armor grants good offensive bonuses.
Titanium armor gives a similar amount of defense to Adamantite armor, with a more defensive set bonus in comparison.
- If one does not mind hybrid sets, Warriors and Rangers should use the
Frost Breastplate,
Spider Greaves(Desktop, Console, Old-gen console and Mobile versions), and their corresponding
Adamantite Head piece.
- A mage can use a combination of the
Adamantite Headgear,
Mystic Robe(Desktop, Console, Old-gen console and Mobile versions), and
Forbidden Treads(Desktop, Console and Mobile versions) to maximize magic DPS. However, this is very frail.
- A Summoner should use
Spider armor(Desktop, Console, Old-gen console and Mobile versions) for extra minions. However, if one desires extra range and speed for whips, Obsidian armor can be used.
- If you have beaten Queen Slime,
Crystal Assassin armor(Desktop, Console and Mobile versions) can be used by all classes and its set bonus will allow you to free up an accessory slot that would normally be taken by the Shield of Cthulhu at this point.
- Once at least one mechanical boss has been defeated,
Hallowed armor with the corresponding head piece can be used for its solid set bonus.
Weapons
For Melee users:
- Despite being a pre-Hardmode weapon, the
Night's Edge is still solid as it has high damage. The
Ice Sickle can also be used.
- The
Amarok(Desktop, Console and Mobile versions) and the
Frostbrand are both useful due to the
Frostbite(Desktop, Console and Mobile versions) debuff.
- If at least one mechanical boss has been defeated, the
Gungnir and the
Mushroom Spear are good piercing weapons.
- The
Flying Knife(Desktop, Console and Mobile versions) can be controlled, allowing you to use it while inside shelter.
- The
Dao of Pow can be used to disrupt enemy lines and inflict the
Confused debuff (although some enemies are immune).
- The
Shadowflame Knife(Desktop, Console and Mobile versions) inflicts the
Shadowflame(Desktop, Console and Mobile versions) debuff and can ricochet up to two times.
For Rangers:
- The
Daedalus Stormbow(Desktop, Console and Mobile versions) (with
Holy Arrows),
Marrow and
Ice Bow are all good bows. Even the
Hellwing Bow(Desktop, Console and Mobile versions) is still useful due to its infinite pierce.
- The
Adamantite Repeater and
Titanium Repeater (with Jester's Arrows) can be used if one has not obtained them.
- The
- The
Clockwork Assault Rifle (with
Crystal Bullets or
Cursed/
Ichor Bullets), the
Onyx Blaster(Desktop, Console and Mobile versions) (with
Cursed/
Ichor Bullets), the
Phoenix Blaster, and the
Uzi are all excellent choices. The
Megashark is even better if you've beaten The Destroyer.
- The
Dart Rifle(Desktop, Console and Mobile versions) or
Dart Pistol(Desktop, Console and Mobile versions) are great for debuffs. Use
Ichor Darts(Desktop, Console and Mobile versions) for the Dreadnautilus and Hemogoblin Shark, and
Cursed Darts(Desktop, Console and Mobile versions) or
Crystal Darts(Desktop, Console and Mobile versions) for crowds and the Blood Eel.
- The
Flamethrower excels at dealing with crowds if one has beaten Skeletron Prime.
- The
Toxikarp(Desktop, Console and Mobile versions) has a rapid fire rate and inflicts the Poisoned debuff. It must be fished up in the Corruption, but is a good option if you want to get a new weapon as fast as possible.
- The Star Cannon is still a solid option, but can be upgraded into the
Super Star Shooter(Desktop, Console and Mobile versions) after any mechanical boss has been defeated.
For Mages:
- The
Flower of Frost and
Frost Staff can both inflict the Frostbite debuff. The
Flower of Fire is a weaker version of the former.
- The
Life Drain(Desktop, Console and Mobile versions) is great against crowds.
- For passive damage, the
Nimbus Rod and
Clinger Staff(Desktop, Console and Mobile versions) can be used.
- The
Crystal Vile Shard(Desktop, Console and Mobile versions) is useful for attacking mobs from shelter.
- The
Golden Shower and
Cursed Flames are good for debuffs.
- The
Crystal Storm and
Unholy Trident have a rapid fire rate, but the latter is dropped by deadly
Red Devils.
- The
Sky Fracture(Desktop, Console and Mobile versions) deals good damage against single targets, but does not pierce.
- The
Crystal Serpent(Desktop, Console and Mobile versions) is good against crowds.
- The
Spirit Flame(Desktop, Console and Mobile versions) is very strong against the Dreadnautilus.
For Summoners:
- Few options are available for whips in early Hardmode, but the
Cool Whip(Desktop, Console and Mobile versions) is a solid choice. The
Durendal(Desktop, Console and Mobile versions) can also be used after at least one mechanical boss has been defeated.
- Alternatively, the
Firecracker(Desktop, Console and Mobile versions) can be used with
Abigail's Flower(Desktop, Console and Mobile versions), which gets a buff in Hardmode. Abigail will have a hard time catching up with the Blood Eel and Dreadnautilus during its spinning attack, however.
- Alternatively, the
- The
Spider Staff(Desktop, Console, Old-gen console and Mobile versions) is available early, and a decent improvement over the Pre-Hardmode options, especially with the spiders' ability to latch onto enemies and inflict the Acid Venom debuff. Putting walls behind your arena can make the spiders more mobile.
- If Queen Slime has been defeated, the
Blade Staff(Desktop, Console and Mobile versions) is a good option especially when paired with whips, and will ignore the defense of any Blood Squids that Dreadnautilus summons.
- For sentries, the
Queen Spider Staff(Desktop, Console, Old-gen console and Mobile versions) is the easiest to obtain. If you are willing to take on the Tier 2 Old One's Army (or farmed Defender Medals beforehand), the tier 2 Tavernkeep sentries can also be used (like the
Ballista Cane(Desktop, Console and Mobile versions) and the
Lightning Aura Cane(Desktop, Console and Mobile versions)).
Accessories
Wings are always useful to have in Hardmode.
- The class-based Emblems dropped by the Wall of Flesh (
Warrior,
Ranger,
Sorcerer,
Summoner(Desktop, Console and Mobile versions)) will help with the higher defense of Hardmode enemies.
- To avoid being knocked back by enemies during important fights, the
Cobalt Shield (or its upgrades) is extremely useful.
- Warriors and Summoners can combine their Feral Claws with a
Titan Glove to create the
Power Glove, which can then be upgraded into the
Mechanical Glove for the former or the
Berserker's Glove(Desktop, Console and Mobile versions) for the latter.
- A Ranger can use the
Magic Quiver if they prefer bows over guns.
- Mages can also use the
Magnet Flower(Desktop, Console and Mobile versions),
Mana Cloak(Desktop, Console and Mobile versions) or
Celestial Cuffs(Desktop, Console, Old-gen console and Mobile versions).
Blood Moon Fishing
Unprepared players may want to avoid fishing during a Blood Moon because of the exclusive enemies that can be fished up -- these are the Zombie Merman(Desktop, Console and Mobile versions) and
Wandering Eye Fish(Desktop, Console and Mobile versions) in pre-Hardmode, while the
Hemogoblin Shark(Desktop, Console and Mobile versions),
Blood Eel(Desktop, Console and Mobile versions) and
Dreadnautilus(Desktop, Console and Mobile versions) can be hooked in Hardmode. It is strongly recommended to at least bring
Sonar Potions if you plan on fishing at this time, as it will warn you with red text when you're about to hook up an enemy -- Although this detail also applies to the
Surly Slime(Desktop, Console and Mobile versions), a harmless town pet that moves in shortly after being fished up. The extremely rare
Advanced Combat Techniques(Desktop, Console and Mobile versions), a permanent booster, and
Dread of the Red Sea(Desktop, Console and Mobile versions), a painting, are also available and are the only catches that are not highlighted with red text.
If you do wish to intentionally hook them up for their drops, you can also use the Chum Caster(Desktop, Console and Mobile versions) dropped by the Zombie Merman and Wandering Eye Fish, as well as throw any
Chum Buckets(Desktop, Console and Mobile versions) that you get from fished up Blood Moon enemies into the water to further speed up the process.
Be sure to prepare a proper arena with an open space before fighting them for their drops, like mentioned in the General tips section. Keep your surroundings in mind as well, and get rid of any dangerous enemies or mobs that are starting to get too big whenever you see them, as they can easily make a important fight take a turn for the worse -- So for example, a Dreadnautilus fight can very quickly be ruined by a random Clown.