swampfox66

So with GH19 and the points drops on pinks, a lot of folks who used to play Changehost have come back to it. I recently picked up the game so I am a bit new to Sigmar, especially at the the 2000 point level. My question is if I used the Changehost ability to move in a Lord of Change to replace the Changeling, could I swap them back in the next round with the Changeling's ability undisturbed? Would the rule that he is undetectable unless within 3 inches of a hero still hold (assuming no spells, unbinds, etc)?