Corrosive Slime Guardian

Defender, Wither
Whenever Corrosive Slime Guardian
is dealt combat damage, create 2 1/1
Black Green Blue Corrosive Ooze
creature tokens with wither.
At the beginning of your end step, If a creature
died with a -1/-1 counter on it this turn, draw
1 card then put a +1/+1 counter on
an ooze creature.