Mjolnir, Giant Slayer

Equipped creature has +4/+4
{r}{r}, unattach Mjolnir The Giant slayer: It deals 4 damage to any target. If it was equipped to Thor, Thunderstruck while you unattached it. Attach Mjolnir, The Giant Slayer to Thor, Thunderstruck at the beginning of the next end step.
Equip {8}
Equip to Thor, Thunderstruck {0}