Demonic Contract

At the beginning of your upkeep if you have
fewer cards, life or creatures than any opponent
gain the difference and/or that many 1/1 black
demon creatures with "when this creature blocks
sacrifice it" You can't lose the game as long
as there are 4 or more players.
If you would discard a card, lose life or sacrifice a
creature you double that number instead.
At the beginning of your end step if there are only
two players you lose the game