Halana and Alena, Partners (Innistrad: Crimson Vow)

Legendary Creature Ñ Human Ranger - First strike (This creature deals combat damage before creatures without first strike.)
Reach (This creature can block creatures with flying.)
At the beginning of combat on your turn, put X +1/+1 counters on another target creature you control, where X is Halana and Alena's power. That creature gains haste until end of turn.