The War in Heaven is a rare Enchantment — Saga card from Warhammer 40,000 Commander (40K), collector number 69. Current market price: $0.70, TCGplayer market prices via Scryfall.
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — You draw three cards and you lose 3 life. II — Mill three cards. III — Choose up to three target creature cards with total mana value 8 or less in your graveyard. Return each of them to the battlefield with a necrodermis counter on it. They're artifacts in addition to their other types.