Charlie Kelly: Rat King

When Charlie Kelly: Rat King enters the
battlefield, create three black 1/1 Rat creatures
with Deathtouch. These creatures gain +0/+1
at the beginning of your opponent's upkeep
phase, as long as Charlie Kelly: Rat King is on
the battlefield.
{t}{u} Sacrifice any number of Rat type creatures.
Charlie Kelly: Rat King gains +1/+1 for each
creature sacrificed in this way.