Essence Anchor is a uncommon Artifact card from Tarkir: Dragonstorm (TDM), collector number 44. Current market price: $0.25 (foil $0.29), TCGplayer market prices via Scryfall.
At the beginning of your upkeep, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) {T}: Create a 2/2 black Zombie Druid creature token. Activate only during your turn and only if a card left your graveyard this turn.