I can't figure out how to switch reaver blades when playing as Raziel in LoK: Defiance for the Xbox. Can anyone help me?

alright if you go stuck like me in the huge circle chamber where the huge hour glass is, you have to go back to the last save spot and start from there. After you get back to the hour glass strike it with your sword. imedeatly after you strike the hour glass go to your left where the two small orbs are and then strike them both. if you wate a while like i did, you will have to start over and over again.once your done go back to the teleport and it should be open kill all the demon thingies, get the exp, then go through.

alright scratch that last part.!!!! what you need to to is press the left arrow on your D pad. once you do there should be two options one is a small white circle with a grey half circle above it and the other option should be a reaver pionting upward, press X on the Small white circle with grey half cirlce above and then, there you go.