Oreo, The Fluffy One

+2: Put a 0/1 Ball onto the battlefield
0: Oreo, The Fluffy One's loyalty counters are equal to the number of Balls you have on the battlefield this turn.
-7: Combine all the cards in each players' graveyards and turn them into 0/1 Balls with 5 +1/+1 counters on them. They have haste and trample.