I am predisposed to liking this game. As someone who likes the art of design, think I will enjoy titular codex on the fly deck building because I like having to evaluate cards. Because I like deck builders and I really like drafting magic, probably more than playing out the draft (because it can feel like a 3 hour long scoring phase). So I'm really excited by the Codex aspect of Codex.
I'm only apprehensive about the turn by turn play. Seem pretty similar to magic combat but there is the patrol zone, building, and heroes. I worried that it might not be easy to explain holistically. Especially for people who don't already have an understanding of magic. I'm worried my teaching will become, OK here is how magic would work if we were playing magic, got it? good, because here is 4 more rules. This was my experience with teaching Puzzle Strike, a game I like a lot, but it can be an uphill climb to teach all moving parts.
Now I could be wrong, I haven't played it yet. All I have seen is the majority of the kickstarter videos. Worse case scenario for me is I wait for a digital version and just play it online as I have with Puzzle Strike, so I don't have have to bother with teaching it.