Arcane Denial (Rainbow Foil) [Secret Lair Drop Series] Multiverse Legends whenever either of those creatures

whenever either of those creatures deals combat damage

Set: Urza's Saga Type: Legendary Land Rarity: Rare {T}: Add {U} for each artifact you control

Set: Kamigawa: Neon Dynasty Promos Type: Legendary Land Rarity: Rare {T}: Add {B}

An unlikely jail for an impossible inmate

Arcane Denial (Rainbow Foil) [Secret Lair Drop Series] Multiverse Legends whenever either of those creaturesSet: Secret Lair Drop Series Type: Instant Rarity: Rare Cost: {1}{U} Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep. You draw a card at the beginning of the next turn's upkeep. "Spell request not approved. Try again later."