Epidemic Shredder

The Epidemic Shredder is a craftable Hardmode rogue boomerang. It automatically throws a returning plague disk that pierces five times and inflicts the Plague debuff. The disk can bounce on tiles indefinitely until it reaches the player or despawns. The disk also releases homing plague seekers on each bounce and on enemy hits, dealing a quarter of the base damage and inflicting the Plague debuff.

Performing a stealth strike with the Epidemic Shredder will cause the next disk to release plague seekers as it travels.