Prison Term (HOP) from Planechase, 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 activated.
  Whenever a creature enters the battlefield under an opponent's control, you may attach Prison Term to that creature.