Hey Ben... Not your strongest submission, but I still dig this story and your raw style.
I noticed (as Frog did) that you're tagging your dialogue now. I miss your style of not using them.
If you decide to go back to that, just try to keep in mind ways of making the dialogue sound different from character to character like you were doing in earlier chapters.
I agree with the others that Jason's magic ability was too abrupt. too fast. The parts with the ring especially felt off. Consider making him fail at some spells a few times before he gets one right. Also, load up some of those old WRITING EXCUSES podcasts and listen to Brandon talk about "Sanderson's First Law" of magic.
Having Javick jump out of the bushes felt a little comical, IMO.
Like Frog said, I also thought Javick was dead. .. and then he spoke. It came across as comical as well.
Regarding his curse... I didn't get AT ALL that his curse was related to Jason's failure to save Angel from Newt. If that was your intent, (and I "think" I see where you're going with it....) then you may want to drop some more hints that tie the curse and its resulting effect together. For Example: If Jason goes to do a fireball, it fizzles and he suddenly hears Javick's last words echo through the forest. Something like that to tie the failure to the curse.
I was suprised (!!!!!) when Angel got swallowed. Holy crap.
I'm mostly curious to see how Newt actually died. And eating his heart was just plain creepy. Eww
One thing that I keep thinking about is Jason's overall motivation. The whole idea of going along with the plan to collect the reagents made sense when he was on the spot with the deimon. When it was "Do this or die right now." But now that he's away from the diemon, and now that he's got this cute girl with him, it seems to me that he would try to look for a way out of this. Right now he just keeps moving forward toward his doom. Consider making him try to get out of it. He can fail, of course. Dramatically, even. Just keep us reminded of why he has no choice but to do this.
The best part of this submission was by far, hands down, the "Healing scene". (Get it? "Hands down" ... Oh nevermind.) It was interesting, it revealed character, it was sexy, and it was the only time in these chapters where Jason's magic training was believable. My only suggestion would be to consider having Angel guide him more in that scene in order to make it feel more like a lesson. It also gives you a chance to add more sexy to it: "Move your hands here." "Touch me there." etc
Keep going. Rock this shirt. You've got the raw writing talent. Don't try to do too much with your story though. Focus on the main arc, keep putting Jason in trouble, and you'll be fine.
J