Ephemerate (Retro Foil Etched) [Modern Horizons] Oldschool You may spend blue mana

You may spend blue mana as though it were mana of any color to pay the activation costs of Quicksilver Elemental's abilities

Rarity: Rare Cost: {B}{B}{B}{B}{B}{B}{B}{B}{B}{B}{B}{B}{B}{B}{B} You must cast both B

Set: Kaladesh Prerelease Promos Type: Artifact Rarity: Rare Cost: {4} Whenever you cast a spell

it deals damage to any target equal to the number of Elementals you control

Set: Stronghold Type: Instant Rarity: Uncommon Cost: {1}{G} Buyback—Sacrifice a land

Ephemerate (Retro Foil Etched) [Modern Horizons] Oldschool You may spend blue manaSet: Modern Horizons Type: Instant Rarity: Uncommon Cost: {W} Exile target creature you control, then return it to the battlefield under its owner's control. Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)