Your search for "Constricting Sliver 611" revealed the following:
Constricting Sliver - Surprise Slivers (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Karl Kopinski Card Text: Surprise SliversSliver creatures you control have "When this creature enters the battlefield, you may exile...
Constricting Sliver (Foil) (M15) from Magic 2015, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Karl Kopinski Card Text:Sliver creatures you control have "When this creature enters the battlefield, you may exile target creature an opponent controls until...