[quote]I can't for the life of me get Might of Crota to spawn at the end of Siege of the Warmind. Omnigul just floats there behind the glass looking all smug and doing nothing. I've tried resetting, abandoning the quest, going away and doing other quests, etc. Nothing works. Is this a known bug?[/quote] I've seen this. Happened to me twice in a row. I just kept replaying the mission and it spawned the third time. Don't know what else to tell you other than to keep trying. Good luck.