Xeno Staff
Buff | UFO(Desktop, Console and Mobile versions) |
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Buff tooltip | The UFO will fight for you |
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- Internal Item ID: 2749 (Desktop, Console and Mobile versions)
- Internal Buff ID: 140 (Desktop, Console and Mobile versions)
- Internal Projectile ID: 423, 433

Obtained from
The Xeno Staff in use. Note how the UFO teleports above the
Skeletons on the right.
The Xeno Staff is a Hardmode, post-Golem summon weapon that spawns a UFO minion that instantly teleports above the nearest enemy before rapidly firing thin blue lasers at its target. The UFO's lasers are fired instantaneously at a rate of once every 0.4 seconds[1] on average. If the UFO minion is more than 75 tiles away from the player, it ceases to attack enemies and returns to the player.[2] The Xeno Staff has a 1/6 (16.67%) chance of being dropped by the Martian Saucer during the Martian Madness event.
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 Xeno Staff has over a Ruthless one is knockback.
Notes
- UFO minions can target enemies up to 125 tiles away from the player, and will automatically return to the player's side if their distance from the player is more than 125 tiles.
- If an enemy is targeted by the player using a Whip or Summon staff, UFO minions can continue attacking it until their distance from the player is more than 187.5 tiles, at which point the minion targeting circle disappears and aggro range of UFO minions returns to normal, causing them to teleport to the player's side.
- UFO minions can teleport to enemies that are between 18.75 to 50 tiles away from them.
Tips
- Despite having lower damage than the Tempest Staff, the UFO is superior to Sharknados regarding attack speed and accuracy. However, it cannot attack in all directions like the Sharknados. This is usually a problem in tight spaces but not when in open spaces.
Trivia
- The prefix xeno- means foreign, different in origin, and often relates to aliens.
- Prior to the 1.3.5 update, the Xeno Staff had an extremely low sell value, making reforging it to a desired modifier very cheap.
- The Xeno Staff has the lowest item ID of all items added in the 1.3.0.1 update.
History
- Desktop 1.4.4.9: Increased average cooldown between attacks from 0.36 seconds to 0.4 seconds.
- Desktop 1.4.4:
- Increased average cooldown between attacks from 0.33 seconds to 0.36 seconds.
- UFOs no longer need to fully return to the player before they can teleport and re-engage with a new enemy.
- UFOs will now attempt to return to the player faster depending on how fast the player is moving.
- Desktop 1.4.1: Increased average cooldown between attacks from 0.3 seconds to 0.33 seconds.
References
- ↑ Information taken from the
Desktop 1.4.4.9 source code, method AI_062()
in Terraria.Projectile.cs
. The UFO's ai[1] is increased by 1 each tick and then has a 2/3 chance to be increased by 1 another time. Therefore, it is increased by 5/3 on average for each tick. The threshold is 40, so the average cooldown between attacks is 40/(5/3)=24 ticks
- ↑ Information taken from the
Desktop 1.4.4.9 source code, method AI_062()
in Terraria.Projectile.cs
.
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