Reality Smasher [Oath of the Gatewatch Promos]

Set: Oath of the Gatewatch Promos Type: Creature — Eldrazi Rare Cost: {4}{C} ({C} represents colorless mana.) Trample, haste Whenever Reality Smasher becomes the target of a spell an opponent controls, counter that spell unless its controller discards a card. As easy to stop as it is to comprehend.