can you stack dupe uniques? you can’t stack dupe masters so i don’t think that’s allowed.
can't stack Dragons either. But can put one on both her and her cell. If you unlock the true ending path, you can unlock another skill that'll allow, with this setup, a massive alpha strike the first round of combat.
so basically, for the first round of combt:
normal 1x damage
Dragon or unique skill 2x damage
Dragon + Unique skill 4x damage
then when you move on to the DLC and acquire Quad Alcy where she gets an additional move.
This does mean with weak enemies, the opening round becomes very tedious.