No, i'm saying you don't need the buffs at all and the game is still good. Add more rune combinations when you have time, not randomness.
Especially you want less spells that are direct damage and more situational spells. Add time stop, make ice wall an actual wall rather then aoe, make meteor storm cover whole board but damage the caster too. Nerf frozen orb.
Also, mana system, delay between casting, and medetation timings are confusing. I mostly just pressed stuff and if it doesn't work i try again later.
But hp, spell count and secondary spell are easy to understand, no problems there.
Hope your game does well! It's fun!