Skittering Cicada (Extended Art) [Commander Masters] Aura Curse or Mountain card

or Mountain card

Set: The Brothers' War Retro Artifacts Type: Artifact Rarity: Mythic Cost: {2} Whenever a permanent becomes untapped

Set: Summer Magic / Edgar Type: Sorcery Rarity: Rare Cost: {X}{U}{U}{U} Destroy X target Mountains

Set: Amonkhet Invocations Type: Instant Rarity: Mythic Cost: {B} Add {B}{B}{B}

000 Type: Instant Rarity: Common Cost: {B} Prevent all combat damage that would be dealt this turn

Skittering Cicada (Extended Art) [Commander Masters] Aura Curse or Mountain cardSet: Commander Masters Type: Creature Insect Rarity: Rare Cost: {3} Flash You may cast colorless spells as though they had flash. Whenever you cast a colorless spell, until end of turn, Skittering Cicada gains trample and gets +X+X, where X is that spell's mana value.