Demon Queen Coco

Hexproof, Partner with Lich Leo
All Creatures you own are considered Demons in addition to their other types
Demonic Sleep: (If this creature remains in play for 10 turns, cast all demons you own to the battlefield"
Demons you cast now cost {0} grey mana until your next turn
"Did she just summon something from the depths of hell and then make biscuits?"