Whats the worst rep grind ever? For me it was Skyguard. I know it can be done in like 12 hours if you just power grind mobs and kill the minibosses along with both the dailies in Blade's Edge and Terokkar but it took me forever. Then I got seasick when I finally rode the damn things lol. I would say the one for the Nether Drakes but I gave up on that crap at honored.