Is There A Way To Get More Mana?

i was playing the game and i saw a potion shop that had a potion that gave +30 mana and i see it thinking: "i thought 20 was the only amount of mana you have?" and now im asking, is 20 the maximum or can you upgrade your max mana, if so then HOW cuz i need this

 

It's 30 mana regened over a period of time
And no, you can't increase how much mana you have, Intelligence reduces spell costs however

 

you cant increase your mana

 

Instead of increasing the amount of mana you have, you can increase the rate at which you regain it, via potions, armour, and weapons.

 

You can also reduce the rate at which you 'spend' it by getting higher intelligence stats which reduces mana cost when performing spells (and i think you can sprint for long but don't quote me on it)
Also you can reduce mana 'spending' by not spamming spells like a noob :P