Mjolnir

Worthy 3 (Can only be equipped to a creature with Devotion three or more of any one color.)
Equipped creature gains first strike, flying, it's base power and toughness become 8/8, and has {t}: Deal 3 damage to target creature or player.
Equip {3} (The equip cost must be paid with
mana of the same color as the creature it's equipping.)