According table on CRB page 162, the spell "mana barrier" either creates a mana barrier on the physical plane or on the astral plane.
- Can the mage choose the plane the barrier should be at time of casting? OR
- Is the barrier created on the plane the mage is when casting, meaning only a pysical mage could cast a physical mana barrier and only an astral projecting mage could cast an astral mana barrier.
- Is the barrier created on the plane the mage is when casting, meaning only a pysical mage could cast a physical mana barrier and an astral projecting mage and a physical mage with astral perception could cast an astral mana barrier, due to the physical mage with astral perception beeing dual-natured.
CRB page 161
"Mana barriers on the physical plane ... act as solid barriers to spells, manifesting entities, dual-natured entities, spirits, and active foci."
and
"Mana barriers on the astral plane ... stop astral movement..."
- Does a mana barrier on the astral plane stop dual-natured things (manifesting entities, dual-natured entities, active foci)?
- If yes, what is the difference between a mana barrier on physical or astral plane, as both basically stop the same things? I assume an astral mana barrier will definitively stop spirits, so the only unclear item is whether an astral mana barrier would stop spells cast on the physical plane.
- If no, how can I rationalize that there is an astral mana barrier and it does not stop the astral from of e.g. a dual-natured shape shifter, but it does stop e.g. the dual-natured shape of a materialized spirit? Would we need to identify a "home plane" for each entity (e.g. shape shifter home plane is physical thus not affected by astal mana barrier, spirit home plane is astral thus affected by astral mana barrier)?