Animate Graveyard 
Enchantment — Aura
Enchant your graveyard Enchanted graveyard is a creature on the battlefield with base power and toughness each equal to the number of cards in it. It has the text boxes of all creature cards in it. It's still a graveyard. If enchanted graveyard would leave the battlefield, instead exile this Aura.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL