Callous Oppressor (ONS) from Onslaught, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Justin Sweet
• Card Text:
  You may choose not to untap Callous Oppressor during your untap step.
  As Callous Oppressor comes into play, an opponent chooses a creature type.
  T: Gain control of target creature that isn't of the chosen type as long as Callous Oppressor remains tapped.