Deadly Sphere Staff

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Deadly Sphere Staff
  • Deadly Sphere Staff item sprite
Stack digit 1.png
Damage40 (Summon)
Knockback2 (Very weak)
Use time36 (Very slow)
TooltipSummons a deadly sphere to fight for you
RarityRarity level: 8
Research1 required
Grants Buff
BuffDeadly SphereDeadly Sphere
Buff tooltipThe Deadly Sphere will fight for you
Projectile created
  • Deadly Sphere
    Deadly Sphere
Obtained from Obtained from
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
Deadly SphereDeadly Sphere.pngDeadly Sphere13.33%6.56%

The Deadly Sphere Staff is a Hardmode, post-Plantera summoning weapon that summons a Deadly Sphere minion. Like other minions, the summoned Deadly Sphere is invincible and follows the player for an unlimited amount of time, unless the player dies, summons a replacement minion, cancels the buff, or leaves the world. It attacks by charging at enemies to inflict contact damage. It cannot move through blocks. The Deadly Sphere Staff has a 3.33*1/30 (3.33%) / 6.56*59/900 (6.56%) chance to drop from Deadly Sphere during a Solar Eclipse.

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.


  • The minions can be summoned anywhere on the screen, even on solid tiles, and give off light, making the weapon useful for cave exploration.


  • The Deadly Sphere has several visual forms. It periodically rotates between these after having attacked three times. This has no functional effect.
  • 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 for the Deadly Sphere resembles a TIE Advanced, a fictional starfighter in 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.
The Deadly Sphere Staff attacking a Mimic.


  • Desktop 1.4.4:
    • Drop rate increased from 2.5*1/40 (2.5%) / 4.94*79/1600 (4.94%) to 3.33*1/30 (3.33%) / 6.56*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.
    • Sphere minions 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 Enemy immune frames caused by Deadly Sphere attacks have been reduced from 10 to 8.