Gensokyo/Uncanny Trident

The Uncanny Trident is a Hardmode spear. When thrust, it shoots a projectile that moves in a snaking pattern, piercing an unlimited number of enemies and ignoring blocks.

It is available for purchase at the Curio Trader after defeating a Tier 7 Boss.

Trivia

 * This weapon is a reference to the trident wielded by Nue Houjuu.