Spellwarp: Astral Magic (GAP)

__TOC__
:Astral.
:Lost.
:In my mind, or someone else's.
:Shadows creep all around me, of thoughts I've never had and spells I've never cast.
:Remnants.
:Does it work, or am I betrayed?
:Shadows creep all around me, of things I've never seen and words I've never spoken.
:Escape.
:Found.
:Is it real, or again illusion?
:Shadows creep all around me, of choices I've never made and lives I've never lived.
:- Poem found scrawled on a wall in Sigil, near a portal to the Astral. Chant has it that shortly after it was written, a number of sods were put in the dead-book by an insane spellcasting murderer, thought to roam the streets of the Hive to this day.
Everywhere a body goes, magic works differently. It's one of the laws of the multiverse. Every place differs, and so magic used there also varies. A spellslinger finds that her spells (whether wizard or priest) change depending on where they're cast. The Astral Plane (though not really a place) is no exception. Those spellcasters within the mental realm of the Astral find that their spells work differently there.
'Course, magic being different shouldn't strike anyone as strange, since a body on the Astral - in fact, all "matter" on the Astral - is really just a mental construct. It's going to react differently to magic. Spells affecting distance or movement also get all barmy since the Astral doesn't really have any space. 
Overall, however, magic is even more potent in the Silver Void. This is a magical place. In fact, aside from mental energies and other strange unknown (and some unknowable) astral energies, magic is the only thing that can exist on the Astral. On the Astral, physical things translate into mental constructs while magical things translate into magic. While astral energies are not magical in the strictest sense, uninformed berks cannot distinguish them from the stuff of actual enchantment. In fact, due to a flaw in the detect magic spell, these energies detect as magic, and since to some extent they pervade the plane, so does everything encountered there. DMs should decide whether other methods of detecting magic are also foiled on a case-by-case basis, although most probably should be.