Rayquaza C (8/147) (Cracked Ice) [Platinum: Supreme Victors] Kithkin Knight If that card's mana value

If that card's mana value is less than or equal to the sacrificed artifact's mana value

Heir to Blackblade: Search your library for up to two Swamp cards

Set: Portal Three Kingdoms Type: Sorcery Rarity: Rare Cost: {3}{W} Destroy all lands

Set: Ravnica Allegiance Prerelease Promos Type: Creature — Mutant Rarity: Rare Cost: {G}{U} Activated abilities of creatures you control cost {2} less to activate

(Aura cards that can't enchant a creature on the battlefield remain in your graveyard

Rayquaza C (8/147) (Cracked Ice) [Platinum: Supreme Victors] Kithkin Knight If that card's mana valueSet: Platinum: Supreme Victors Type: Colorless Rarity: Holo Rare Retreat cost: Colorless,Colorless,Colorless