Rimescale Dragon (CSP) from Coldsnap, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Jeff Easley
• Card Text:
  Flying
  2S: Tap target creature and put an ice counter on it. (S can be paid with one mana from a snow permanent.)
  Creatures with ice counters on them don't untap during their controllers' untap steps.