Scour | Magic: The Gathering
Formats Scour is Legal in
Official Oracle Text for Scour
Official Rulings for Scour
2/1/2005 : Scour can target and exile cards that aren't always enchantments, but are enchantments when Scour is cast and resolves (such as creatures turned into enchantments by Soul Sculptor). Scour'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.