Paladin's Hammer

The Paladin's Hammer is a rare drop from the Paladin, who is only found in the Hardmode Dungeon. It is an extremely fast returning boomerang, which has one of the shortest ranges for a boomerang-classed weapon, but if it gets the proper equipment, this weapon can become one of the deadliest available (Up to about 130 Damage with the right equipment and modifiers). This weapon hits through enemies, proceeding until they hit a solid wall or reach the limit it can go before returning, allowing for insane accumulative damage against enemies such as the Destroyer. When coupled with the Frost Armor's inflicted Frostbite debuff, which affects each segment of worm enemies, a single player can tear the Destroyer down in around half a minute. As with all modifiable boomerangs, the best prefix for the Paladin's Hammer is Godly.

Trivia

 * This item could also be a reference to Thor's hammer Mjolnir, due to the fact that when thrown it returns to the user's hand.
 * This item could also be a reference to Link's boomerang, the only item which a paladin could pull with in vanilla wow.