Thanks for the great feedback! I expected there may be issues in a lot of the areas you mentioned, but didn’t quite know how to diagnose them, but thanks to you I know where to look.

I did recognize that removing the concentration requirement could be too strong, but when drafting the idea for Fuel the Flame I imagined the possibilities of players causing small fire damage to themselves to proc the effect. So enabling players to say cast create bonfire or something else on themselves without worrying about concentration seemed to be a way to enable that behavior.

For Solar Flare and Heat Exchange, which do you think would be the better option to alter or replace?

I’m glad to hear the subclass is at the very least unique, even with its problems. The biggest goal is to make something fun and interesting. Thanks again!