The Poet of Envy

+1: Tap target permanent and put an Envy counter on it. A planeswalker with three or more Envy counters is exiled instead.
-4: Gain control of target permanent with an Envy counter until the end of turn. Untap that permanent.
-7: Return all permanents to their owner's hand except this card. Put a loyalty counter on this card for each card returned this way.