Haste

Attacking creatures you control have +2/+0.

Whenever another player attacks, you may have them gain control of Bearstine, Feller of Men until end of turn. He is tapped and attacking.

Whenever Bearstine, Feller of Men attacks for the third time each turn rotation, transform him.

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.