Deadly Sphere Staff

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Desktop/Console/Mobile-Only Content: This information applies only to the Desktop, Console, and Mobile versions of Terraria.
Deadly Sphere Staff
  • Deadly Sphere Staff item sprite
Auto-use
Stack digit 1.png
Statistics
Type
Weapon
Damage40 (Summon)
Knockback2 (Very weak)
Mana10
Use time36 (Very slow)
Velocity10
TooltipSummons a deadly sphere to fight for you
RarityRarity level: 8
Sell10 GC
Research1 required
Grants Buff
BuffDeadly SphereDeadly Sphere(Desktop, Console and Mobile versions)
Buff tooltipThe Deadly Sphere will fight for you
Projectile created
  • Deadly Sphere
    Deadly Sphere
Sounds
Use
  • Internal Item ID: 3249 (Desktop, Console and Mobile versions)
  • Internal Buff ID: 161 (Desktop, Console and Mobile versions)
  • Internal Projectile ID: 533
Obtained from Obtained from
Classic Mode.png Classic
Expert Mode.png Expert
Master Mode.png Master
EntityQty.Rate
Deadly Sphere(Desktop, Console and Mobile versions)Deadly Sphere.gif Deadly Sphere(Desktop, Console and Mobile versions)13.33%6.56%
The Deadly Sphere minion attacking a Mimic.

The Deadly Sphere Staff is a Hardmode, post-Plantera summon weapon that summons a Deadly Sphere minion. The Deadly Sphere minion passively levitates around the player and attacks enemies by charging into them at high velocity. Once every three attacks, it briefly stops in place to cycle through one of three visual forms before continuing to attack its chosen target. The Deadly Sphere's forms are circulated in a predetermined order. It cannot move through blocks. Like other minions, the summoned Deadly Sphere is invincible and follows the player until they die, summon a replacement minion, cancel the buff, or leave the world. The Deadly Sphere Staff has a 1/30 (3.33%) / 59/900 (6.56%) chance of being dropped by Deadly Spheres.

Its best modifier is Ruthless. The Mythical modifier provides the widest array of stat bonuses, but these primarily affect the initial summon rather than the resulting minion. Additionally, minions cannot deal critical hits. The only lasting advantage a Mythical Deadly Sphere Staff has over a Ruthless one is knockback.

Notes

  • The minions can be summoned anywhere on the screen, even on solid tiles, and give off light, making the weapon useful for cave exploration.
  • On average, the Deadly Sphere charges once every 0.53 seconds.[1]
    • This does not mean the Deadly Sphere hits once every 0.53 seconds in practice, as it will not adjust its position between charges, causing it to occasionally miss or charge at the enemy when its local immunity timer has yet to finish ticking.
  • Deadly sphere can target enemies up to 50 tiles away, and can continue attacking its current target until its distance from the player is more than 93.75 tiles, in which case it automatically returns to the player's side.
  • The Deadly Sphere applies 12 ticks[2] of local immunity frames upon hitting an enemy.

Trivia

  • The staff may appear or be reforged with the Deadly modifier, resulting in the name "Deadly Deadly Sphere Staff". A similar trick can be done with the Lucky Horseshoe, the Lucky Coin, and the Arcane Flower.
  • Like the enemy that drops it, this item is a reference to the 1979 American science fantasy horror film Phantasm.
  • One of the designs of the Deadly Sphere minion resembles a TIE Advanced, a fictional starfighter from the American epic space-opera media franchise Star Wars. However, it is actually a visual reference to a variant of the sphere seen in the 1988 American science fantasy action-horror film Phantasm II, the sequel to Phantasm.

History

  • Desktop 1.4.4:
    • Drop rate increased from 1/40 (2.5%) / 79/1600 (4.94%) to 1/30 (3.33%) / 59/900 (6.56%).
    • Damage reduced from 50 to 40.
    • Now uses local immune frames.
    • Aggro range has been increased, so it will attempt to engage enemies from further distances. Additionally, improved how its "dash" movement is able to engage enemies at a distance.
    • Deadly Spheres now return to the player more quickly.
    • Fixed a bug that caused Deadly Spheres to spontaneously de-aggro from enemies in the middle of combat.
  • Desktop 1.4.1.2: Enemy immune frames caused by Deadly Sphere attacks have been reduced from 10 to 8.

References

  1. ↑ Information taken from the Desktop version Desktop 1.4.4.9 source code, method AI() in Terraria.Projectile.cs. The relevant part is the aiStyle == 66 code block. The Deadly Sphere's ai[1] increments by 1 each update. After starting a charge, it gains 1 extraUpdate, thus incrementing ai[1] by 2 per frame. Upon its ai[1] reaching 40 for its first form or 30 for the other two forms, its extraUpdate is removed and its ai[1] is set back to 1. Upon its ai[1] exceeding 10 in this state, it charges again, thus charging once every 30 frames in first form and 25 frames in the other two forms. If a form transition is due, the Deadly Sphere's ai[1] must increment to 16 after all previously mentioned thresholds before charging again, creating a 46/41 tick delay depending on its previous form. This means that the Deadly Sphere cycles back to its original state in 288 ticks, charging 9 times in the process. This averages out to be 32 ticks per charge.
  2. ↑ A tick is a time unit countable by the software. Most of Terraria's updating logic happens every tick. A tick has the length of 1/60th of a second, hence there are 60 ticks in a second and 3600 ticks in a minute.
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