Ludevic, Deranged Visionary

{t}: Draw a card, then discard a card
Whenever a player discards a card, if it is a creature card create a 2/2 black Zombie creature token, if it is a noncreature card put a research counter on Ludevic, Deranged Visionary instead.
{u}{b}{r}, remove X resarch counters from Ludevic, Deranged Visionary: You may cast target instant or sorcery with converted mana cost X from a graveyard without paying its mana cost.