Who has enough powerful magic.

I agree. For light and dark magic, magical power isn't really needed, especially for lower-level spells. But the effect is amazing! Especially with a well-developed skill and mass spells! Mass slow, weaken, vulnerability, dispel, and conversely - speed, bless, punishing strike, stone skin... wow!!! The army is strengthened several times over. And magical power only affects the duration. 5-7 is really quite enough. Considering the possibility of finding corresponding artifacts, it's not difficult to achieve for any hero.