Hastur, The King in Yellow

At the beginning of each end step, if a player discarded a card this turn, create a 1/1 black Bird creature token with flying and "This creature can't block."
{3}{b},{t}: Each opponent discards a card. Activate only as a sorcery.
“No, he is not vicious, nor is he in the least demented. His mind is a wonder chamber, from which he can extract treasures that you and I would give years of our life to acquire.”