The Mighty Thor

{u}{r}: Thor deals 4 damage to any target.
{4}{u}{r}{u/r}: If Thor isn't Worthy, put a flying counter and a vigilance counter on him, and
he becomes Worthy. You may search your
hand or library for a card named Mjolnir,
Uru Hammer and put it onto the battlefield attached to Thor. If you searched your library, then shuffle.