I did one of those "make a toy" quest from the guy in arctic frost,and when I finished,he whispered something about a Magic bottle,magic essence? It's Life essence or something like that will make it special...Does anyone know about that?

He's talking about , which was a prize at Luminaire, but you can get it from either the Cash Shop or user shops.

Using it will turn your active pet into a Nostalgic pet. Subetalodge has a list of the pets available.

Ah,great...thanks alot!