[*]Invoke Duplicity: Should not require concentration, to allow a Trickery Domain Cleric to cast other concentration spells. If Mirror Image does not require concentration, it seems strange that Invoke Duplicity would.
This in particular, I agree with.
This will be problematic if they implement invoke duplicity in full, as I suspect the current version is just a placeholder.
You would be able to cast Spirit Guardians on your duplicate, send it into the middle of the fray, sit back behind a rock, hitting things with spiritual weapon, and hiding every turn.
