Creatures your team control have +1/+1.

(Fuse with Bearstine, Feller of Men)

Flying, Haste, Lifelink, Vigilance

Attacking creatures you control have +1/+0 and Lifelink.

Whenever another player attacks, you may have them gain control of Berenstain, Hellfire Drake until end of turn. He is attacking.

Whenever a creature you control deals combat damage to a player, put a +1/+1 counter on that creature.