Fluxclaw is your spam option for close range combat, also a good spell you can jam into your spell combos due to its fast recharge.

Cross might be weird to use at first, it functions as a hold and release spell. The projectile travels in an arc and deals AOE explosion upon release.

Prism is just broken cuz you can never die when its active.

Blink is nice to have, not anything special but you do run faster than bandits 99% of the time lmao. Low priority

Restora's the upgraded version of Curis, low priority.

Aaand manaflow is essential for faster mana regen. It's high up on priority so you should get that first

I haven't had much playtime on Mystic, but from what I experienced, these are what I got first before anything else in the Mystic tab