Your search for "Diffusion Sliver 618" revealed the following:
Diffusion Sliver - Surprise Slivers (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Trevor Claxton Card Text: Surprise SliversWhenever a Sliver creature you control becomes the target of a spell or ability...