Undercity Sewers (Promo Pack) [Murders at Karlov Manor Promos] Guilds of Ravnica Prerelease Promos Set: Sun & Moon: Crimson

Set: Sun & Moon: Crimson Invasion Type: Dragon Rarity: Ultra Rare Retreat cost: Colorless

Set: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {1}{U} You may return an Island you control to its owner's hand rather than pay this spell's mana cost

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(It's an artifact with “{T}

Undercity Sewers (Promo Pack) [Murders at Karlov Manor Promos] Guilds of Ravnica Prerelease Promos Set: Sun & Moon: CrimsonSet: Murders at Karlov Manor Promos Type: Land Island Swamp Rarity: Rare (T: Add U or B.) Undercity Sewers enters the battlefield tapped. When Undercity Sewers enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)