Vedalken Shackles (5DN) from Fifth Dawn, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Mark Zug
• Card Text:
  You may choose not to untap Vedalken Shackles during your untap step.
  2, T: Gain control of target creature with power less than or equal to the number of Islands you control as long as Vedalken Shackles remains tapped.