Avacyn's Madness - Watcher in the Web node where one of the secondary objectives is to NOT summon any creatures with Lifelink.
Token creatures with Lifelink used to be ok, in the past, but now they count. I can understand that, but the major issue here is that for some reason, the event counted 1 creature with Lifelink, even though I didn't have any in my deck nor did I use any cards that were able to produce creature tokens with Lifelink.
I think the following happened: All my creatures on the board died, either by my own doing (because another secondary objective is to sacrifice x or more creatures) or by the spider's To The Slaughter. I had already have a Cartouch of Ambition on the field, to make sure I don't die to Razaketh's ability. I have Razaketh and Cartouche of Ambition in my deck. The next creature that hits the board, gets the Lifelink evergreen from Cartouch of Ambition. That's the only situation I can imagine the game sees as summoning a creature with Lifelink.
Please investigate and fix. Another 3 points lost due to this **** game.
//Edited Title - Tombstone