[AreaOfEffect]

Gift of Reason restores commander status. If the unit has magic or priest levels of any kind, then the unit will still have them but they will be hidden. Once you cast GOR on them the magic levels are restored in full.

The only exception to this are prophets. If you restore a prophet to commander status they will no longer have their priest levels from prophet status. They will however still be blessed and will still count as one walking temple. The unit will also still reap the statistical benefits of being in your dominion and the penalty of being outside it.