Nature's Banner

Creatures you control have trample.
If you're the King, creatures you control have +2/+2 and at the beginning of combat on your turn target green creature you control may fight target non-green creature you don't control. If
you're not the King, creatures you control have +1/+1, reach, and at the beginning of combat on your turn target green creature you control fights target non-green creature you don't control.