Overall, it's interesting but parts of this class are intensely overpowered. Many spells / feats need to be balanced and quite a bit of the spell effects need editing. It has the potential to be an excellent class, but is not there currently.

Excoriate, for instance, gives you the chance to deliver 3 Slow spells every round for 10 rounds for the cost of a single action, level 2 focus spell. Slow is a 2 action level 3 spell. Further, you inflict 1d8 persistent bleed damage initially and up to 4d8 persistent bleed damage on a critical success at level 7 - again, at the cost of a single action level 2 focus spell. Compare this to the 'Wounding' weapon rune which only becomes available at level 7 and deals 1d6 persistent bleed damage (2d6 on a critical success).

Judgment of Eons literally ages your target as a level 1 focus spell and deals 2d6 damage. Meanwhile Judgment of Repulsion (also a level 1 focus spell) deals 1d8 damage and nudges your target 5 feet. Judgment of Silver outright prevents Wild Shape.

Many of the effects are also not bounded as of its current printing - effects delivered by level 1 focus spells are permanent in many cases.

Please note - I believe that Excoriate is intended to be a single attack spell which might bring its power into line but as is, the wording may be interpreted differently. Again, polishing this class is all it would take to make it great.