Hi all,
Our game last night descended into chaos at the appearance of the Demon Lord as the alternate ending. The character facing the Demon Lord wanted to use Drain Life to discard the Demon Lord, therefore winning the game, and the rest of us weren't sure that was allowed. The big question was whether or not the Demon Lord could be considered an "enemy" by the terms described in the card.
Drain Life card - "Cast on an Enemy you are about to encounter. Discard the Enemy and heal an amount of life equal to that Enemy's Strength or Craft"