Shadowbeam Staff

The  is a spell that was added in the Terraria 1.2 update. It can be obtained from Necromancers in the Dungeon during Hardmode.

Upon using, the Shadowbeam Staff will fire a purple beam that will bounce off walls based on the angle it hits and penetrates enemies. The entirety of the beam is an instantaneous cast, meaning that it reaches full length the instant it is used. This makes it particularly accurate within close quarters.