The Emissary of Rebirth

When this creature enters the battlefield, return
X target creature cards with power 5 or less from
your graveyard to the battlefield were X is the
number of times you've cast a card named
The Emissary of Rebirth.
At the beginning of your upkeep, you may
discard a card, if you do, return The Emissary of Rebirth from your graveyard to your hand.