Find it here https://ko-fi.com/s/0bcb6bdfcc

All 18 bases of the Medieval Base Pack. Pack contains Codrille, Peluda, Beast Calopus, Cat Calopus, Aitvaras, Pukis, Cath Palug, Knucker Dragon, Medieval Basilisk, Gargoyle, Hippogriff, Lindworm 3, Mermaid, Peryton, Tarrasque, Wyvern 2, Wyrm, Zmej 2.

You save 36 dollars when purchasing them together. You can use then for both your own characters and adopts for sale. Only sell finished adopts with these base, do not redistribute the bases in a form that allows other people to make their own adopts from it.

The PNGs is not MSPaint safe, you're expected to color under them with a program that uses layers.