Gelid Shackles (CSP) from Coldsnap, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Alex Horley-Orlandelli
• Card Text:
  Enchant creature
  Enchanted creature can't block and its activated abilities can't be played.
  S: Enchanted creature gains defender until end of turn. (S can be paid with one mana from a snow permanent.)