Quicksilver Elemental [Mirrodin] HGSS Promos that player puts that many

that player puts that many cards from the top of their library into their graveyard

druid acolyte

Flip a number of coins equal to the number of Lightning Energy cards you discarded

You can only activate 1 "Gateway to Chaos" per turn

Quicksilver Elemental [Mirrodin] HGSS Promos that player puts that manySet: Mirrodin Type: Creature Elemental Rarity: Rare Cost: {3}{U}{U} {U}: Quicksilver Elemental 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 Quicksilver Elemental's abilities.