Thanks!
To add cards, open Games, here you can mod the game or create own from scratch. Thanks for letting me know about this, I will make the Editor button always visible to make it easier to find.
For now, the idea is that people create their own games/mods and handle balancing themselves. There is a value field that can help you balance things, but it currently doesn't work with the new ability editor, will fix that soon. I do want to try creating something where people can use their own cards against each other, but compared to other things such as making custom games work online and custom art, it is not a priority right now.
Art is from Ækashics Librarium, and some images were not made to be seen that large. I will try upscaling to make it better.
The Ice Wolf will be fixed, should have been On Play, not On Summon.
Growth might need a nerf. :)