Conan, Cimmerian Warrior

Ferocious - When Conan, Cimmerian Warrior
enters the battlefield, if you control a creature
with power 4 or greater, put a +1/+1 counter
on each other creature you control.
Whenever Conan, Cimmerian Warrior
attacks, target creature an opponent controls
gets -X/-X until end of turn, where X is the
number of creatures you control that are
attacking this turn.