Cheapest priced copy (Oath of the Gatewatch): $0.99 at Card Kingdom, near mint, their price list as of .
Reality Smasher 
Creature — Eldrazi · 5/5 · Rare · Secret Lair Drop · #1153
({C} represents colorless mana.)
Trample, haste
Whenever this creature becomes the target of a spell an opponent controls, counter that spell unless its controller discards a card.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.99 to $11.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Oath of the Gatewatch | 7 | Rare | $0.99 | $5.99 |
| Oath of the Gatewatch Promos | 7s | Rare | — | $5.49 |
| Store Championships | 31 | Rare | — | $1.79 |
| Secret Lair Drop | 1153 | Rare | $9.49 | $11.99 |
One ruling from Wizards of the Coast
- 22 January 2016The last ability will trigger due to any spell controlled by an opponent (including an Aura spell) that targets Reality Smasher.