Tuman, Demon Creator

Deathtouch, Haste
Whenever a creature your opponent controls, you may create an X/X Colorless Illusion creature token with decayed, X is equal to that creatures mana cost.
Whenever you cast a demon from your hand or deck, you may pay 5 life and then create a copy token of that creature expect it has decayed.
{5}:Demons you control gain the following ability until the end of your next turn: "Whenever this card dies, create two copy tokens of this card, expect it doesn't have this ability."