Tablet of Compleation is a rare Artifact card from Phyrexia: All Will Be One (ONE), collector number 398. Current market price: $0.33 (foil $0.35), TCGplayer market prices via Scryfall.
{T}: Put an oil counter on this artifact. {T}: Add {C}. Activate only if this artifact has two or more oil counters on it. {1}, {T}: Draw a card. Activate only if this artifact has five or more oil counters on it.