Beast of the Night Farkas

Trample, Menace, Lifelink, First Strike
Whenever Beast of the Night Farkas attacks, it
gains +2/+1 until end of turn for each creature
your opponent controls. If Beast of the Night
Farkas deals combat damage to a player, destroy
target creature that opponent controls.
At the beginning of your end step, if no creatures
died this turn, transform Beast of the Night Farkas