Thing from the Heavens

Flying
Whenever you cast a spell, return target
permanent with the spell's converted mana cost
to its owner's hand.

"I looked up at the moon, and seemed to have
vanished. There were a few glimpses of its edge, but
its center was missing. Inside were lights, like stars
but not quite. I went to the old astronomer's house
and found him at his telescope, dead of a heart attack.
Morbidly curious, I looked into the lens..."