Maahir has something similar. Daily replenishment is increased, but not per level.
So, theoretically, it is possible to achieve it within a level (at least it's not a duplicate).
Because percentage-based growth is an unnecessary workaround, considering that the hero only uses mana for themselves.
By the way, can we make a special replenishment of creatures for winning a battle??? There definitely isn't one (I checked). That is, there are 10 dryads – you kill 7, and after the victory, there are 10 again.
Added 7 minutes later
If we increase mana based on some parameter, it won't match the bio-specialization.
