Where to start? Guinsoo's Rageblade? There's just one champion in this entire game that can use that item successfully and that's Jax. It can work on Akali and Kayle too, but it's really not worth the slot it fills. If you really wanted a hybrid item on Shyvana why the hell not use Hextech Gunblade? It's a hell of a lot useful, cause it gives life-steal and spell-vamp, but let me say that hybrid Shyvana is a horrible idea. As for your survivability, the combo of Sunfire Aegis and Guardian Angel is a really unfortunate one.

This mix-up of items with no synergy offers neither enough survivability, nor enough offense. Plus, you build pretty high ATS on her and therefore you set her up as an auto-attacker(as Shyvana should be, so nothing wrong with that), but you have no life-steal whatsoever, auto-attackers should always have life-steal, just my opinion, it helps a lot to stay alive.

nice (y)

I suppose that makes sense, with twin bite being your spam damage output ability, I just prefer maxing burnout first because I'm victim to laziness in terms of last hitting haha and the MS boost from burnout is handy too. I'll make note of that alternative in my skills section thanks Jack :)

I prefer twinbite. Level two burn out is plenty for jungling and minion waves.

nice build, I went 14/3/9 with it :D . I'm not sure if I prefer maxing Burnout or Twinbite first though :/ +1 when i can

oh and constructive criticism is appreciated, its my second build and first time using the code as you can probably tell xD