Brook, Brother of the Axe

+2: Equip an unequipped artifact to target creature. If you don't own an unequipped artifact, create an Axe artifact with equip 2 that gives +2/+1
-4: Creatures you control gain Haste, Reach, and Vigilance until the end of turn.
-8: Create X Axe Artifacts with equip 2 and give +2/+1 and Double Strike, where X is all the creatures you control. Equip one Axe to each Creature.