gem summon crashed ma game immediately as I clicked it. tried it again and it worked fine against vanilla characters. I was using Pion as my opponent when I crashed.

Thanks for pointing this out. do you mind telling me a bit more about what happened right before it crashed?

I'd just used my first gem install, and when I saw gem summon I wanted to see what it does. I clicked, and immediately crashed. not much else I remember, I don't have a replay.

update almost 3 months later, I figured it out! it looked like an issue with the gem being imported (not entirely sure how, but I've seen a guide that looks like it fixes this exact problem), so hopefully this should be fixed when I finish the next update :)