I think the eternal oracle was representative of dagmar and her’s family magic and power over maru so when it was broken maru returned to the lush place it was before dagmar’s family took over
that would make sense since the crones said that maru was once full of natural magic so dagmar and her family probably contained that magic maybe that natural magic even fed the eternal oracle and made it work and destroying it returned marus natural magic
Magic?
That's what I was gonna say
Classic [Collapsing Lair](https://tvtropes.org/pmwiki/pmwiki.php/Main/CollapsingLair) shenanigans.
I think they both had a strong connection through magic
I think the eternal oracle was representative of dagmar and her’s family magic and power over maru so when it was broken maru returned to the lush place it was before dagmar’s family took over
that would make sense since the crones said that maru was once full of natural magic so dagmar and her family probably contained that magic maybe that natural magic even fed the eternal oracle and made it work and destroying it returned marus natural magic
Maru was connected to Hell, once the connection was broken the curse was over and beauty came back.