His (or her) full name is "Snow Edition--Limited Rot": Rot="red," instead of the black dragon Ashes. It looks like there are the option of two kinds of horns, and painting is sort of unclear--Rot herself paints a new friend:
While there are fifty of these snow cuties, I can't even tell if they are sold out or not. But you can check for yourself here:
If that link is weird, try www.aileen.com and look under "petdoll" on the menu tab.