Quote Originally Posted by MaxiDuRaritry View Post
Or you could just take time hop as a power known and not permanently waste a feat.
Time Hop is 3rd level so earliest you get is 5th level, and I'm pretty sure it doesn't work on walls as it is too big, and again, Retraining or Psychic Reformation. I don't think you are fully grasping the utility of Disintegrate since that is what this burrow speed is (doesn't work on wood though).