The Unholy Arrow is a type of arrow. The Unholy Arrow can pierce up to 4 targets, hitting a total of 5 targets. The damage of the Unholy Arrow decreases by 5% for each target it pierces. Against enemies with multiple segments, like the Eater of Worlds, a single Unholy Arrow can damage multiple segments. (Old-gen console and 3DS versions) A fired Unholy Arrow has a 1/4 (25%) chance of being recoverable after hitting an enemy or block.
In addition to being crafted, Unholy Arrows are dropped by the Eye of Cthulhu in worlds that generated with Corruption. Furthermore, they can be purchased from the Arms Dealer at night for 40 CC once the Eater of Worlds or Brain of Cthulhu has been defeated. After activating Hardmode, they become available during the day as well.
- On Old-gen console version and Nintendo version, due to requiring Worm Teeth, which only drop from Devourers and have no Crimson equivalent, Unholy Arrows are not possible to craft in worlds that generate with Crimson without transferring materials (ideally Worm Teeth) from a world with Corruption.
- However, it is possible to purchase them from the Arms Dealer even on Crimson worlds.
- The Unholy Arrow's piercing is weaker than the Jester's Arrow's, which can pierce an unlimited amount of enemies.
- (Desktop, Console and Mobile versions) The damage penalty after each piercing is smaller in the case of Unholy Arrows (5% as opposed to 10%).
- Unlike the Jester's Arrow, Unholy Arrows do not automatically break after a certain amount of air time.
- Desktop 1.4.1: Applies a 5% damage penalty to the next hit for each enemy a projectile pierces.
- Desktop 1.2:
- Recipe changed; now requires 5 Wooden Arrows and produces 5 Unholy Arrows, instead of 3 each.
- Stack limit increased from 250 to 999.
- Desktop 1.0.5:
- Unholy Arrows can now be purchased from Arms Dealer at night after killing the Eater of Worlds.
- Recipe changed; now requires 3 Wooden Arrows and produces 3 Unholy Arrows, instead of 2 each.