Lord of Atlantis (Borderless) [The Lost Caverns of Ixalan Special Guests] Serpent {T}: Add X mana in

{T}: Add X mana in any combination of colors

Set: Duskmourn: House of Horror Commander Type: Legendary Creature — Serpent Rarity: Mythic Cost: {4}{G}{U} You may play an additional land on each of your turns

Set: Commander Masters Type: Enchantment Rarity: Rare Cost: {B} At the beginning of each end step

Return it to the battlefield under its owner's control at the beginning of the next end step

Bearer of Secrets attacks each combat if able

Lord of Atlantis (Borderless) [The Lost Caverns of Ixalan Special Guests] Serpent {T}: Add X mana inSet: The Lost Caverns of Ixalan Special Guests Type: Creature Merfolk Rarity: Rare Cost: {U}{U} Other Merfolk get +1 +1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)