ay dwnwthvwls this might be something you'd be somewhat interested in, since i'm pretty sure you're the only Hearthstone player here :P
sometimes I have TOO MUCH creativity so I have to give myself some sort of project to keep myself from going crazy so I decided to make a "Fan Expansion". I'm currently at 92 cards and have around 20-30 more to make. The template is 3 commons, 3 rares, 2 epics, 1 legendary for each class and then a so-far undetermined amount of neutrals although there are a lot so far
When I'm finished I'll make it much more official and probably organize everything on a Blog so I can spam it all over Reddit and various Hearthstone forums but for now you get a sneak peak if you want :^)
ninplayer expansion - Album on Imgur
I've tried to keep everything as balanced as I can while still introducing some very powerful cards that would shake up the meta. I didn't introduce any new keywords or anything so it should be pretty simple to scroll through and get a gist of what's good and what's not.