Fireball [International Collectors' Edition] Cockatrice where X is 1 plus

where X is 1 plus the exiled creature's mana value

If it's a land card

Return Recurring Nightmare to its owner's hand: Return target creature card from your graveyard to the battlefield

Set: From the Vault: Dragons Type: Artifact Creature — Dragon Rarity: Rare Cost: {16} Domain — This spell costs {2} less to cast for each basic land type among lands you control

Fireball [International Collectors' Edition] Cockatrice where X is 1 plusSet: International Collectors' Edition Type: Sorcery Rarity: Common Cost: {X}{R} This spell costs {1} more to cast for each target beyond the first. Fireball deals X damage divided evenly, rounded down, among any number of targets.