Found the name of the 26th episode
From The Lost Media Wiki
I found out that the 26th episode's name is "The sorcerer's mountian (part 2): The end of the beginning". Strangely enough i found it from a promo video from a channel in Serbia that contains at the end the flutemaster intro. At the end it says it's the 26th episode: https://youtu.be/aHChqbsHeSI&t=190