Splinter

Oracle Text

Exile target artifact. Search its controller's graveyard, hand, and library for all cards with the same name as that artifact and exile them. Then that player shuffles his or her library.

Card Rulings

10/4/2004 Does not exile other cards of the same name that are on the battlefield. Just from the graveyard, hand, and library.
2/1/2005 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.
2/1/2005 The copies must be found if they are in publicly viewable zones. Finding copies while searching private zones is optional.