Prison Term (SHM) from Shadowmoor, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Zoltan Boros & Gabor Szikszai
• Card Text:
  Enchant creature
  Enchanted creature can't attack or block and its activated abilities can't be played.
  Whenever a creature comes into play under an opponent's control, you may attach Prison Term to that creature.