Reworks most spells, a few skills and some minor stuff. No, it actually plays pretty well, I use it myself. No, I don't think 30 mana for Town Portal is too much. You shut up.
INSTALL: Make sure you have Heroes 3 Complete + HD mod + HOTA mod installed before installing my mod, and don't update after. It should be compatible with any versions of HD and HOTA from 2020 up to and including 2022, and possibly more recent ones. Extract archive contents to root folder, overriding any files. That's it.