Stormbreaker

Worthy. Stormbreaker may only be equipped
by creatures with worthy. (Creatures with
worthy get +3/+3 and gain all abilities of Thor,
God of Thunder.)
Equipped creature gets +1/+1 and has vigilance.

Throw: {3} ({3}, tap equipped creature: Equipped creature deals damage equal to its power to any one target. Unequip this artifact.)
Equip: {0}