Summary Dismissal

• WWizards of the Coast2016-07-13
  Official Ruling
  Only 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.
• WWizards of the Coast2016-07-13
  Official Ruling
  Spells that can’t be countered are exiled by Summary Dismissal. They won’t resolve.

Rulings via Scryfall