Corpse Connoisseur is a uncommon Creature — Zombie Wizard card from Modern Masters 2017 (MM3), collector number 61. Current market price: $0.27 (foil $0.80), TCGplayer market prices via Scryfall.
When this creature enters, you may search your library for a creature card, put that card into your graveyard, then shuffle. Unearth {3}{B} ({3}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)