Phyrexian Atlas is a common Artifact card from Phyrexia: All Will Be One (ONE), collector number 237. Current market price: $0.23 (foil $0.31), TCGplayer market prices via Scryfall.
{T}: Add one mana of any color. Corrupted — Whenever this artifact becomes tapped, each opponent who has three or more poison counters loses 1 life.