Your search for "Manaweft Sliver 184" revealed the following:
Manaweft Sliver (Foil) (M14) from Magic 2014, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Trevor Claxton Card Text:Sliver creatures you control have "T: Add one mana of any color to your mana pool."
Manaweft Sliver - M14 Reprint (Foil) (PLST) from The List, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Trevor Claxton Card Text:Sliver creatures you control have "T: Add one mana of any color to your mana pool."
Manaweft Sliver (M14) from Magic 2014, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Trevor Claxton Card Text:Sliver creatures you control have "T: Add one mana of any color to your mana pool."
Manaweft Sliver - Surprise Slivers (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Trevor Claxton Card Text: Surprise SliversSliver creatures you control have "T: Add one mana of any color."
Manaweft Sliver (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Franz Vohwinkel Card Text:Sliver creatures you control have "T: Add one mana of any color."