Splinter

• WWizards of the Coast2004-10-04
  Official Ruling
  Does not exile other cards of the same name that are on the battlefield. Just from the graveyard, hand, and library.
• WWizards of the Coast2005-02-01
  Official Ruling
  The copies must be found if they are in publicly viewable zones. Finding copies while searching private zones is optional.
• WWizards of the Coast2005-02-01
  Official Ruling
  Splinter can target and exile cards that aren’t always artifacts, but are artifacts when Splinter is cast and resolves (such as an animated Stalking Stones). Splinter’s exile effect only looks for cards by name, not type.

Rulings via Scryfall