[2022] Is there a way to unlock all spells?

Hey! There's not like a cheat code or anything, but the easiest way to do it quickly would be to play 3-round custom team games with mercy rule on and do "mirror 7" for the draft mode (teams will need to be even to do this mode, so you may need to add a bot if you have an odd number). It'll assign all 7 spells randomly and the match could be over in 2 rounds, unlocking an element. And then repeat until all are unlocked.

Hope that helps!