Earth-Shaker Great Axe

Equip {3} Tap creature if its base toughness
is less than 5 as this artifact is equipped.
You may equip to a Barbarian without
paying for the equip cost.
Equipped creature gets +3/+1
Tap equipped creature, detach this artifact.
Earth-Shaker Great Axe deals 1 damage
to up to 3 creatures without flying an opponent controls.