Arcanist, Kineticist, Artificer, and Alchemist are upgraded to the next level.
You access to more magic systems as well as the ability to design your own. Your energy pool and recharge rate are multiplied by 10. Your spells are no longer limited in strength. Your Kineticist abilities are affected in a similar way.
Your enchantment cap is raised to five and you generate 6 more charges per day. Your enchantments are no longer limited in strength.
You can create potions that can have permanent effect on the drinker. Your potion can now grand powers on par with a high tier cape. You can transmute metamaterials that are more easily enchanted, or that can conduct, store, or enhance spells, as well as various power-like effects. The transmutation time is now proportional to the circle's area instead of the volume.
With this, you could potentially destroy an Entity if you put your mind to it.
(This doesn't give you additional abilities, only upgrade what you already have)