Hey, I'm not sure if it's on purpose or not, but I just recently bought the game on steam (and have been thoroughly enjoying it, btw,) and I just noticed recently after finally investing into passive spells on my new playthrough, I noticed that I was loosing almost all of my mana instantly (12.5 out of 13.) I think for some reason, maybe unintentionally, or maybe not, the activation costs are growing based off of the amount that you already activated. However, in the itch.io demo version I was playing, which is just on 0.26b, that isn't the case. For example, while just using miasma, the activation cost is 0.5 mana. But if I leave it activated, and then try to activate anything else, for example haste, the activation becomes 1.5 mana, then 2.5 mana, then 3.5 mana, etc. so by the time you use just 5 passive spells, you've gone through all your mana. If it is on purpose, then it's fine (even if I feel like its a bit too expensive) but I'm just trying to figure out why it's happening, and I can't find any patch notes or anything about it, so I wanted to check.
Again, love the game aside from that though. keep up the great work <3