Cheapest priced copy (Eldritch Moon): $0.49 at Card Kingdom, near mint, their price list as of .
Summary Dismissal 
Instant · Rare · Modern Horizons 3 Commander · #193
Exile all other spells and counter all abilities.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.49 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eldritch Moon | 75 | Rare | $0.49 | $1.49 |
| Innistrad Remastered | 88 | Uncommon | $0.49 | $0.49 |
| Innistrad Remastered | 368 | Uncommon | $0.59 | $0.79 |
| Modern Horizons 3 Commander | 193 | Rare | $0.49 | $0.49 |
| Eldritch Moon Promos | 75s | Rare | — | $0.69 |
2 rulings from Wizards of the Coast
- 13 July 2016Only activated and triggered abilities on the stack are countered. Static abilities of objects remain unaffected, and activated and triggered abilities of objects may be activated or may trigger again later in the turn. Spells and abilities that have already resolved aren’t affected.
- 13 July 2016Spells that can’t be countered are exiled by Summary Dismissal. They won’t resolve.