Nega Kat, Dark Reflection

At the beginning of your upkeep, this creature gains
a Godsblood counter. Additionally, whenever a
Legendary Creature enters the battlefied, this
creature gains a Godsblood counter.

Remove one Godsblood Counter: This creature
gains +1/+1 until end of turn.

Remove three Godsblood counters: Deal 3 damage
to any target.