I am not sure if I understand the level 10 Utility Power Persistent Tail correctly. Let's say I have a level 11 CB-Monk Ghostwalker.
When I hit a target and slide it adjacent I get CA. I then have also concealment against that enemy. In the next round, the enemy shifts two squares. As soon as it has moved one square, I can move up to my speed immediately? Do I provoke an opportunity attack in this case?
Because my concealment lasts until the end of my next turn, I will still have concealment after my movement. If I then beat the enemy's passive (or active?) perception check, it can't see me any more. Is this correct?