Hornhead, Tartarus Champion

Fight for Dominance:
When Hornhead enters the battlefield, battle target creature with the most toughness, if Hornhead has more power than target creature, destroy that creature instead.
Tartarus Clan:
When another member of Tartarus Clan enters the battlefield, gain +2/+2.
Champion of Tartarus:
Pay {8} Destroy target creature, gain Trample.

"Uh-oh... Looks like their 'Champion' is getting into the act."