Rennala, The Full Moon

+1: You may play a spell with a mana cost 3 and under, without paying its mana cost
-3: Create token copy of a nonlegendary creature, it is a spirit in addition to its other types. It gains haste and is exiled at the end of this turn
-6: Return a creature card from either exile or a graveyard, it becomes a spirit in addition to its other types, put it on the battlefield tapped.