Mana Crypt [Mystery Booster] Naga Shaman Set: Amonkhet Invocations Type: Creature

Set: Amonkhet Invocations Type: Creature — Elemental Rarity: Mythic Cost: {3}{B}{G} Lord of Extinction's power and toughness are each equal to the number of cards in all graveyards

If that mana is spent on a creature spell

Set: Collectors' Edition Type: Land — Forest Island Rarity: Rare ({T}: Add {G} or {U}

They only specify the consequences should you fail

Set: Ultimate Masters Box Topper Type: Sorcery Rarity: Mythic Cost: {3}{U}{U} Take an extra turn after this one

Mana Crypt [Mystery Booster] Naga Shaman Set: Amonkhet Invocations Type: CreatureSet: Mystery Booster Type: Artifact Rarity: Mythic Cost: {0} At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you. {T}: Add {C}{C}.