Mjolnir

Equipped creature gets +4/+4 and Vigilance,
Flying, First Strike and Lifelink.
Can be equipped to Planeswalkers. If equipped to
a Planeswalker the Planeswalker becomes a 7/7 Asgardian God creature with Vigilance, Flying,
First Strike and Lifelink that's still a planeswalker
with all of it's abilities. If it is equipped to a Thor Planeswalker then the Planeswalker gets +2/+2.
Equip {8}