Vilethorn

The Vilethorn is a weapon that unleashes a row of thorns doing damage to everyone it hits, in exchange for 5 mana per use. The low damage it does is compensated by being able to hit an enemy multiple times before disappearing. The thorns possess the ability to go through enemies and even blocks, allowing them to pierce multiple enemies, and even attack those on the other side of blocks.

The Vilethorn has a chance to drop from a destroyed Shadow Orb. It can also be found by killing the eater of worlds as a rare drop