Question:
How about a seneschal witch using Manifest Will:
(Arcane: Raw energy and magical formulae circulate around you. A creature that begins its turn in the emanation gains weakness X to spell damage for 1 round.)
They cast a Force Barrage (3-actions)
3 separate targets would each take 1d4+1+X damage
OR
1 target would take 3d4+3+X damage
correct?
Lets say instead they cast three separate 1 action Force Barrages.
They are cast separately, though each spell chooses to target the one creature. Burning through 3 spells would the damage now become:
(1d4+1+X)x3 ??