Phyrexian Scriptures is a mythic Enchantment — Saga card from March of the Machine Commander (MOC), collector number 266. Current market price: $0.95, TCGplayer market prices via Scryfall.
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Put a +1/+1 counter on up to one target creature. That creature becomes an artifact in addition to its other types. II — Destroy all nonartifact creatures. III — Exile all opponents' graveyards.