5e Prestige classes

So I've seen a lot of discussion on the topic of prestige classes in 5e over the years. I've never really liked the way they've been presented in Unearth Arcana. So I figured I'd give it a go and make my own. In the attached pictures are the Shadowdancer and Archmage prestige classes. Let me know what you think.

btw, for the Archmage, I used strain in place of spell slots because we use a mana system called strain in the game I designed these for. It should be pretty simple to change that out for spell slots though.

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