Your search for "Might Sliver 23" revealed the following:
Might Sliver - Surprise Slivers (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Jeff Miracola Card Text: Surprise SliversAll Sliver creatures get +2/+2.
Might Sliver (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Jeff Miracola Card Text:All Sliver creatures get +2/+2.
Might Sliver (TSR) from Time Spiral Remastered, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Jeff Miracola Card Text:All Sliver creatures get +2/+2.
Might Sliver (Foil) (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Jeff Miracola Card Text:All Slivers get +2/+2.
Might Sliver (TSP) from Time Spiral, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Jeff Miracola Card Text:All Slivers get +2/+2.
Might Sliver (Foil) (TSR) from Time Spiral Remastered, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Jeff Miracola Card Text:All Sliver creatures get +2/+2.