Usris, Corrupted Faithful

Whenever you would lose life outside of
combat, you may instead have each opponent
gain that much life. (You cannot use this
ability for life lost used to cast spells.)
At the beginning of each player's upkeep, if
that player has less than 10 life, they
lose the game. If a player losing the game
would cause you to win the game, that player
wins the game instead.