Quicksilver Elemental is a rare Creature — Elemental card from Mirrodin (MRD), collector number 47. Current market price: $20.51 (foil $84.91), TCGplayer market prices via Scryfall.
{U}: This creature gains all activated abilities of target creature until end of turn. (If any of the abilities use that creature's name, use this creature's name instead.) You may spend blue mana as though it were mana of any color to pay the activation costs of this creature's abilities.