The Brand Of Sacrifice

Casualty X. Enchant player.
At the beginning of enchanted players upkeep,
that player discards a card, if they can't, put a
blood counter on The Brand of Sacrifice.
At the beginning of your upkeep, create a 1/1
red Demon token for every blood counter on
The Brand of Sacrifice.
If The Brand of Sacrifice has 5 blood counters
on it, enchanted player loses the game.