Vespira, Moldervine Exarch

Flying
When Vespira, Moldervine Exarch enters the battlefield, return target creature with converted mana cost 3 or less from any graveyard to the battlefield tapped. If you do, put X -1-1 counters on this card, where X was that creature's converted mana cost.
Whenever a -1-1 counter is placed on this card, put the top 3 cards of your library into your graveyard.