Dreamstealer is a rare Creature — Human Wizard card from Hour of Devastation Promos (PHOU), collector number 63s. Current market price: — (foil $1.07), TCGplayer market prices via Scryfall.
Menace Whenever this creature deals combat damage to a player, that player discards that many cards. Eternalize {4}{B}{B} ({4}{B}{B}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Human Wizard with no mana cost. Eternalize only as a sorcery.)