Altar of Dementia + Disenchant
In the premium draft event, the opponent used the altar dementia card to which I used disenchant to destroy it. The opponent sacrificed a good deal of their board before the disenchant effect went off and destroyed it. I still had about 10 cards left in the deck when the turn was passed to me. When it did become my turn there were no triggers on the stack and the rest of my deck milled itself out making me lose the match.