Hey Woomek! Thanks for your kind words :)
The assets you are looking for are these ones, right?
https://www.patreon.com/posts/exclusive-wall-56844400
As you can see this tileset is part of the collection of addons for Minifantasy available on Patreon. Every month the Minifantasy community decides the theme of upcoming asset packs and other exclusive add-ons.
If you are interested, the minimum subscription of $3 includes instant access to the Patreon archive with 90+ add-ons to expand your Minifantasy collection, along with other good perks.