I am trying to find the name of 70s or 80s cartoon. All I remember is that it was like Humpty Dumpty on his wall and on the other side was like and evil swamp or forrest with a dragon or snake or devil living in it. Might be a religious cartoon??

Hi there I've been desperate to find this animated movie for a while, I watced it in the early 80,s. it was about wizards with different powers fighting it out in a modern day boston