The art depicts this epic clash between bitter rivals and the mechanics of the card hint at the story that comes after this battle
We created a mechanic we called possess, and when a creature with it died, it turned into an Aura, which then enchanted one of your creatures
You can even get a survival ability to trigger on the first turn a creature is on the battlefield if you find a way to tap it or if it entered tapped

Approach of the Second Sun Day of Judgment Defiant Strike Divine Gambit Ephemerate Gift of Estates Gods Willing Mana Tithe Revitalize Swords to Plowshares Teferi's Protection Blue Sun's Zenith Brainstorm Compulsive Research Counterspell Memory Lapse Mind's Desire Negate Opt Strategic Planning Tezzeret's Gambit Time Warp Whirlwind Denial Agonizing Remorse Crux of Fate Dark Ritual Demonic Tutor Doom Blade Duress Eliminate Inquisition of Kozilek Sign in Blood Tainted Pact Tendrils of Agony Village Rites Chaos Warp Claim the Firstborn Faithless Looting Grapeshot Increasing Vengeance Infuriate Lightning Bolt Mizzix's Mastery Shock Stone Rain Thrill of Possibility Urza's Rage Abundant Harvest Adventurous Impulse Channel Cultivate Harmonize Krosan Grip Natural Order Primal Command Regrowth Snakeskin Veil Weather the Storm Despark Electrolyze Growth Spiral Lightning Helix Putrefy Are the Japanese Mystical Archive Cards Available in Foil

Transmute Artifact Transmute Artifact is a rather roundabout entomb effect since the artifact takes a sojourn to the battlefield before hitting the graveyard and it sacrifices an artifact as an additional cost
Le Conte describes them as "star nurseries formed from the supernova explosions of dying stars." If you ask us, we think it's fun to play with their nature to create a mind-bendingly massive cosmic menace