Hedorah, The Smog Monster

Whenever a player sacrifices another permanent,
put a +1/+1 counter on each creature you control.
Sacrifice a Creature: For each opponent place a
Pollution Counter on target artifact, creature
or enchantment that player controls.
{3}{b}{t} Each opponent sacrifices
a permanent with a Pollution Counter on it.
{p/g}{p/b}Return Hedorah, The Smog Monster
to it's owners hand.