Gryffwing Cavalry
From Innistrad: Crimson Vow set
Gryffwing Cavalry
Creature — Human Knight
2/2
Flying
Training (Whenever this creature attacks with another creature with greater power, put a +1/+1 counter on this creature.)
Whenever this creature attacks, you may pay
. If you do, target attacking creature without flying gains flying until end of turn.