Gatekeeper Utility 12Chosen Threshold
You declare a threshold of your choice off-limits to interlopers, and you can defend it even when drawn far away.
Minor Action Area wall 4 within 10 squares
Effect: The area of the wall becomes your chosen threshold that lasts until the end of your next turn. Any enemy that enters the area of the wall is immobilized (save ends). Once before the end of your next turn, as a move action you can teleport to any square of the wall, or any square adjacent to the wall, even if you do not have line of sight or line of effect to the square to which you are teleporting.
Published in Dragon Magazine 387, page(s) 18.