Hey there Skipper! I don't generate artwork for already established IPs (like Alice in Wonderland) due to copyright concerns and AI limitations, but I can definitely produce some unique assets for your other idea!
I wasn't really sure what your art direction was based on the brief description, but I went ahead and created a piece for the "rat with tentacles monstrosity" that I thought would look cool based on the rough drawing you submitted. This is just as an example of the work I can do.
I used an aspect ratio that should work for a trading card even when cropped, but I don't do card borders, UI designs or anything like that, just the artwork. Feel free to download and use this piece if you want, even as a reference or something! It's yours!