Carcharoth, the Red-Maw

Trample, haste
When Carcharoth, the Red-Maw enters the battlefield, it fights target creature you don't
control.
Enrage - Whenever Carcharoth, the Red-Maw is
dealt damage, it deals 4 damage to that source's controller. Then put two +1/+1 counters on it
and have Carcharoth fight target creature.