Greyback, The Golden Angel

When Greyback, The Golden Angel enters the battlefield, creatures you control gain +2/+0
and frist strike until end of turn.
Greyback, The Golden Angel costs {1} less to cast
for each creature you control with power 4 or
greater.
{1}{g}: Target creature you control fights target creature you don't control.
{1}{r}: Target Yautja creature you control deals
2 damage to any target.