Cryptolith Rite [Shadows over Innistrad Prerelease Promos] Mirrodin Besieged if it's on the battlefield

if it's on the battlefield

−7: Exile the top ten cards of your library

Set: San Diego Comic-Con 2017 Type: Legendary Planeswalker — Chandra Rarity: Mythic Cost: {2}{R}{R} +1: Exile the top card of your library

Set: Legends Type: Legendary Creature — Demon Rarity: Rare Cost: {2}{U}{B}{R} Swampwalk (This creature can't be blocked as long as defending player controls a Swamp

Cryptolith Rite [Shadows over Innistrad Prerelease Promos] Mirrodin Besieged if it's on the battlefieldSet: Shadows over Innistrad Prerelease Promos Type: Enchantment Rarity: Rare Cost: {1}{G} Creatures you control have "{T}: Add one mana of any color." The chant was incomprehensible, but its power was unmistakable.