Death-Mask Duplicant is a uncommon Artifact Creature — Shapeshifter card from Darksteel (DST), collector number 115. Current market price: $0.14 (foil $0.48), TCGplayer market prices via Scryfall.
Imprint — {1}: Exile target creature card from your graveyard. As long as a card exiled with this creature has flying, this creature has flying. The same is true for fear, first strike, double strike, haste, landwalk, protection, and trample.