Pwnhammer

The Pwnhammer is a hammer that able to break Demon Altars, blessing the world with one of 3 of the new ores; Cobalt Ore, Mythril Ore, and Adamantite Ore (in that exact order). It is dropped by the Wall of Flesh.

Its appearance resembles the Excalibur, so they are likely to be crafted from the same material/found in the same area/dropped by the same enemy.

Trivia

 * The name is a reference to Super Mario Bros. X, a game Redigit has previously worked on.