Yeenoghu, Lord of Savagery

Haste, trample
Pack tactics - Whenever Yeenoghu, Lord of
Savagery attacks, if you attacked with creatures
with total power 6 or greater this combat,
attacking creatures gain trample and +2/+2 until
end of turn.
Whenever a creature an opponent controls dies,
you may put a +1/+1 counter on target creature
you control.