Toivard, the Polluted

Deathtouch.
At the beginning of your endstep, put a Slime
counter on upto three target creatures you
control.
Creatures you control with Slime counters on
them get +1/+1 for each Slime counter on them.
{u}{b}, Sacrifice a creature you control with a
Slime counter: Create a 4/2 black Slug creature
token.