Icemourne

Icemourne was an unobtainable weapon, added in the 1.2 update. It was entirely removed in the 1.2.4 update.

Trivia

 * This sword's name and appearance is a reference to Frostmourne, a sword wielded by the former Lich King, Prince Arthas Menethil, from the Warcraft franchise. It was likely removed because it would violate the copyright agreement of.