Rimescale Dragon is a rare Snow Creature — Dragon card from Coldsnap (CSP), collector number 95. Current market price: $3.58 (foil $25.73), TCGplayer market prices via Scryfall.
Flying {2}{S}: Tap target creature and put an ice counter on it. ({S} can be paid with one mana from a snow source.) Creatures with ice counters on them don't untap during their controllers' untap steps.