Laszlo, Master of Dusk

When Laszlo enters the battlefield, whenever you discard a card, and whenever a spell you control deals non-combat damage to a player, create a 0/2 blue Illusion creature token.

Illusions you control get +1/+1.

Whenever an Illusion you control deals damage to a creature an opponent controls, put an indigo counter on it.
A creature with one or more indigo counters on it becomes a 0/1 Citizen creature, and it loses all other card types and abilities.