Mesmerizing Dose (ONE) from Phyrexia: All Will Be One, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Konstantin Porubov
• Card Text:
  Enchant creature
  When Mesmerizing Dose enters the battlefield, tap enchanted creature, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
  Enchanted creature doesn't untap during its controller's untap step.