Gollum, Riddle Master (Borderless) (Surge Foil)

As Gollum enters, choose odd or even. (Zero is even.)Whenever an opponent casts a spell with mana value of the chosen quality, choose one that hasn't been chosen —• Put a +1/+1 counter on Gollum.• Each opponent loses 2 life and you gain 2 life.• Draw a card.