Aristrazeous, the Infernal

Infernal—This creature deals damage in the
form of immolation counters, and immolation counters on this creature function as +1/+1
counters.
When this creature enters the battlefield, put an immolation counter on each creature and planeswalker. (At the beginning of a player's upkeep,
that player takes 1 damage for each immolation
counter on them. The same goes for afflicted creatures
and planeswalkers they control.)