What about magic?
To cast any spell, both in combat or while exploring the dungeon, you have to know the right "magic formula", a unique 4 letter words. You can found these formulas scattered in the dungeon. If your magic skill is good enough, you can launch the spell associated with that formula.
If you have played games like "The Bard's Tale 3" you may found this mechanic familiar, but don't worry because in "The 7th Circle" is a little bit more user- friendly: the spellbook is automatically updated when you cast a new spell or read a new magic formula and it's sorted by magic schools.
There are more than 70 spells currently in the game, divided in 5 magic schools (Conjuration, Elemental Magic, Black Magic, White Magic, Necromancy) and every magic school has its own skill-tree, with unique perks and upgrades.