Future expansions.

Regarding the Adagio option: it simply partially copies the Naga ability. If it increased magical attack instead of defense, then yes.

But it increases starting from the second level... The third level will allow the hero to increase the effectiveness of the magic used, and the fourth – to cast powerful spells like "Time Stop" an unlimited number of times and without waiting for a cooldown. I am focusing specifically on the magical aspects of combat, which, it seems, corresponds to the concept of the wizard faction. And regarding filling the scale. My version suggests filling it in situations such as using "Waves of Renewal," "Spiritual Bonds," racial abilities (with the exception of the Orcish one, as it is a warcry), and so on.