Arahbo, Roar of the World [Secret Lair Drop Series] Grass Noncreature spells with {X} in

Noncreature spells with {X} in their mana costs can't be cast

Set: Collectors' Edition Type: Creature — Human Druid Rarity: Rare Cost: {1}{G}{G} Whenever you cast an enchantment spell

Set: From the Vault: Exiled Type: Instant Rarity: Mythic Cost: {U} Search your library for an instant or sorcery card

and double guessing

Arahbo, Roar of the World [Secret Lair Drop Series] Grass Noncreature spells with {X} inSet: Secret Lair Drop Series Type: Legendary Creature Cat Avatar Rarity: Mythic Cost: {3}{G}{W} Eminence At the beginning of combat on your turn, if Arahbo, Roar of the World is in the command zone or on the battlefield, another target Cat you control gets +3 +3 until end of turn. Whenever another Cat you control attacks, you may pay {1}{G}{W}. If you do, it gains trample and gets +X +X until end of turn, where X is its power.