>>27961541I have a few Suicune pokedolls but they were purchased when Gold/Silver and then HGSS were the newest games. To my knowledge, there isn't a current line featuring Suicune, so finding one may be pricey/difficult.
But just start on eBay. Look for sellers with the gold seal thing that says they're a trusted seller and search for Pokemon Center Suicune plush. Or TOMY or Banpresto.
