Mohg, Lord of Blood

Nihil (This creature deals damage to creatures
in the form of -1/-1 counters and to players in
the form of bleed counters)
When Mohg, Lord of Blood enters the battlefield, each player gets a bleed counter. If
a player gets 10 bleed counters, they lose the
game.
{t}{b}{b}: Target opponent gets a bleed counter
and you lose 5 health.