Magusar

You may reveal the first card you draw each turn as you draw it. Whenever you reveal an instant or sorcery card this way, create Cherubael, a legendary 4/4 black Demon
creature token with flying. Whenever Magusar deals combat damage to a player, investigate that many
times. (Create a Clue token. It's an artifact with
"{2}, Sacrifice this artifact: Draw a card.")