Primeval Spawn (Extended Art) [Dominaria United Commander] Phyrexian Knight Whenever you cast a spell

Whenever you cast a spell with an even mana value

you may put it into your hand from outside the game for {3} any time you could cast a sorcery

Sacrifice The Autonomous Furnace: Draw a card

a protected realm of the Underworld as tranquil and vibrant as the rest is bleak

It's an artifact with “{2}

Primeval Spawn (Extended Art) [Dominaria United Commander] Phyrexian Knight Whenever you cast a spellSet: Dominaria United Commander Type: Creature Avatar Rarity: Rare Cost: {5}{W}{U}{B}{R}{G} If Primeval Spawn would enter the battlefield and it wasn't cast or no mana was spent to cast it, exile it instead. Vigilance, trample, lifelink When Primeval Spawn leaves the battlefield, exile the top ten cards of your library. You may cast any number of spells with total mana value 10 or less from among them without paying their mana costs.