Originally Posted by
Yrusama
Hand-mirror. Yes. Also, look at the weapon types for Mime in FFV (knives, rods, staves) and for Gau (shields only). In Tactics they had no weapons.
Finally, note that FFXIV borrows heavily from the Ivalice games in terms of gameplay. Tactics Advance introduced Morpher, which sounds exactly like what you describe minus the Mimic ability. Unfortunately it was taken out of the roster for TA2 because it was a complicated class. I think it's a cool idea, and I LOVED using it in FFTA (Panther Soul ftw), but until we see how good the new severs are I won't get my hopes up.