{Control Magic} {Nephalia Smuggler}
If I was to use Nephalias ability on a creature I have control of because of control magic would the creature return to the battlefield under my control? While I'm at it, say I gained control of the creature with {Act of Treason} instead of {Control Magic}?
I don't see why not
If its exiled, the enchantment will fall off, however...
Yes. It says in the text it will return under your control. So it will