Astral Summoning

Return target permanent to its owner's hand.
Astral Summoning has Embody X, where X is the converted mana cost of the targeted permanent. (When it resolves, this spell becomes a 0/0 Elemental creature in addition to its other types. Then put X +1/+1 counters on it.)
When Astral Summoning dies, return target permanent to its owner's hand.