How rare is the Frost Dragon in Adopt Me?

Could you please elaborate on the rarity of the Frost Dragon in the popular game Adopt Me? Are there any specific conditions or factors that contribute to its scarcity? Is it a seasonal or limited-time pet, or is it simply harder to obtain through gameplay compared to other creatures in the game? Understanding the Frost Dragon's rarity is crucial for players who are aiming to collect or trade it, so any insights you can provide would be greatly appreciated.