Glad you like it so far!
- Yep "talent" should be power - I'll make sure to fix that when I can, thanks for pointing that one out!
- Warp was sort of a spin on the Stress mechanic found in 2400's Orbital Decay (the mechanics are pretty much the same, just a reframing). I liked the idea of being able to use this "paracausal" outside force that can help you out in tough spots, but also running the risk of things getting weird. In Destiny terms, you could go with unusual things happening with Light/Darkness, weird "not-hive magics", and whatnot. If I get a chance (and can find the room), Warp is definitely something I'd like to tweak some more though (flipping the dice-size-ladder to increase the chance of surges is a good idea).
- I have a bad habit of kind of just, tossing in some words that I think are cool/weird and Rending is definitely an example of that haha. Kind of in the spirit of parts of the more esoteric elements of Destiny lore. I'd interpret it however you want! Personally, I was imagining it along a similar spectrum to "taking" (a la Oryx/the Taken), or the more "cosmological damaging" things that crop up in Destiny here and there. Messing with space time is great though, especially if you want to run up against some "not-vex".
Thanks for the feedback/comments, and if you get a chance to give it a go, feel free to let me know how it goes! I love hearing about that sort of stuff.