This Build uses the Crystal Staff to boost the damage of both Crystal Torrent and Shattering Crystal. Lusat's Glintstone Staff costs too much FP to use consistently, and we don't meet the requirements to use Carian Regal Staff yet, so this is the next best one when it comes to scaling.

You'll use Contagious Fury by keeping your Shield in your left hand, buffing your spell damage by 20% for 30 seconds when you use it. This helps range things down more easily, and it has a short animation, allowing you to use it rather easily in boss encounters.

Use Shattering Crystal to AoE and against big enemies, as they get hit by the most Crystals. Crystal Torrent is there to melt bosses and enemies at good range, and when combined with Terra Magica, it can kill most enemies and some Bosses in a single cast.

Glintstone Pebble and Great Glinstone Shard are there for trash enemies, while Comet can be used on the more difficult ones, where using Crystal Torrent is not possible due to its long animation. It can be held down for even longer range, allowing you to hit distant enemies effectively.

Bestial Vitality is there for a small heal over time to restore health to reactive Ritual Sword Talisman when you reach full HP, increasing your damage by 10% once again.