Fists of Impending Doom
임박한 파멸의 주먹 · 末日先兆之拳
Classes that can use it: 
💰 Auction House lowest
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Observed drops
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Drop rates: AtlasLoot Classic · BiS: wowtbc.gg WoW Forever Gear Lists · Names: game client (collected with the Forever Assist addon). May differ in Forever.