How do spell effects work with possession?

[Half-Wizard]

I'm having trouble wrapping my head around how a variety of spell effects work when dealing with possession, like from magic jar (http://www.d20srd.org/srd/spells/magicJar.htm).

Background:
A 9th-level master wizard, Razul, has recently turned insane and evil and moved into a local cave from which he has begun terrorizing a local village with undead abominations, contagions, and mysterious disappearances. The village sent its champions to defeat him but they have not returned and are presumed dead. A 9th-level evoker, Galarion, a former pupil of the mad wizard, returns to stop his master. The mad wizard detects an intrusion soon after Galarion sets off the alarm (http://www.d20srd.org/srd/spells/alarm.htm) at the cave entrance, so Razul sends the dominated village champion, Sir Galrik, an 8th-level warrior, to dispatch the intruder.

Before proceeding further into the cave, Galarion follows his standard routine before a fight and casts mage armor (http://www.d20srd.org/srd/spells/mageArmor.htm), cat's grace (http://www.d20srd.org/srd/spells/catsGrace.htm), and bear's endurance (http://www.d20srd.org/srd/spells/bearsEndurance.htm).

As Sir Galrik reaches the cave entrance, he faintly hears spells being cast. Turning a corner, he faces the intruder. Unfortunately, Sir Galrik has been cursed with low wisdom, and struggles in futility to resist Razul's domination. He hardly stands a chance of restraining himself from this fight.

Galarion spots Sir Galrik approaching, a muscular and tall human dressed in studded leather, wielding a longsword in one hand and a dagger in the other. As usual for encounters with warrior/fighter-types, Galarion would cast a prepared hold person (http://www.d20srd.org/srd/spells/holdPerson.htm) on him, correctly expecting him to fail the saving throw miserably - perhaps even too easily in this case.

In his cautious style, Galarion would probably cast detect magic (http://www.d20srd.org/srd/spells/detectMagic.htm) to check for any significant magical effects before performing a coup de grace on the held subject. On the second round of concentration, he would be surprised to notice a moderately powerful necromancy aura and two moderately powerful enchantment auras on the warrior, instead of one from hold person (http://www.d20srd.org/srd/spells/holdPerson.htm). On the third round, Galarion would identify the dominate person (http://www.d20srd.org/srd/spells/dominatePerson.htm) and bestow curse (http://www.d20srd.org/srd/spells/bestowCurse.htm) effects, likely the work of Razul.

Obviously, Galarion would choose not to kill Sir Galrik, but he wouldn't be able to use dispel magic (http://www.d20srd.org/srd/spells/dispelMagic.htm) against the domination effect either since abjuration is one of his prohibited schools. This also prevents him from using protection from evil (http://www.d20srd.org/srd/spells/protectionFromEvil.htm), so he is unable to interrupt the domination effect. Galarion is high enough level to cast dominate person (http://www.d20srd.org/srd/spells/dominatePerson.htm), but hasn't learned it yet, so he cannot dispel the domination by any means unless he has outside help.

He knows only one spell which might conceivably work in the six rounds he would have remaining: magic jar (http://www.d20srd.org/srd/spells/magicJar.htm). He doesn't have it prepared, but he has it inscribed upon a scroll, and he carries a 100 gp gem for the focus so that he could play dead in an emergency, but the potential for possession would now be the more valuable use for this spell. Unless Galarion chooses to turn back and get help, this would be his only sure means of stopping Sir Galrik without killing him.

Rules questions:

With Galarion in Sir Galrik's body, does he still have the effects of mage armor (http://www.d20srd.org/srd/spells/mageArmor.htm), bear's endurance (http://www.d20srd.org/srd/spells/bearsEndurance.htm), and cat's grace (http://www.d20srd.org/srd/spells/catsGrace.htm), or which of these if any, remain with Galarion's own lifeless body. Do any of these effects coexist on both bodies?

Does Galarion have to resist Razul's dominate person (http://www.d20srd.org/srd/spells/dominatePerson.htm) and bestow curse effects like Sir Galrik did, or do those effects get shifted into the magic jar (http://www.d20srd.org/srd/spells/magicJar.htm) with Sir Galrik's soul, or both?

What happens if Galarion confronts Razul, and Razul casts bestow curse (http://www.d20srd.org/srd/spells/bestowCurse.htm) on Galarion while he's in Sir Galrik's body? Does the curse stay with Sir Galrik, Galarion, or both?

If Galarion casts haste (http://www.d20srd.org/srd/spells/haste.htm) on himself while in Sir Galrik's body and returns to his own body before the haste effect ends, who has the haste (http://www.d20srd.org/srd/spells/haste.htm) effect, Galarion, Sir Galrik, or both?

I couldn't find specific rules for this situation, so what seems to make the most sense to all of you?

[Juntao112]

I'd have the spells stick with the body they are cast on.

[Crake]

Its worth noting that since both dominate person and hold person are mind affecting compulsions that dictate the actions of the target, two people casting them on the same target would result in a battle of wills (opposed charisma check) to determine which effect takes precedence. So the hold person spell that Galarion casted might not have actually taken effect.

Edit: Also, unless you're using some kind of variant, Detect Magic cannot identify exactly what spells are in effect, just the schools of magic. So he would see an enchantment and a necromancy spell on him.

[Emperor Tippy]

RAW most spells follow the character and not the body.

[Half-Wizard]

I'd have the spells stick with the body they are cast on.

I like that. It's simple. I'm certainly leaning that way, but it seems like that creates an annoying loophole. A wizard could shift into a party member's body, cast a personal spell, make it permanent with permanency (http://www.d20srd.org/srd/spells/permanency.htm), and then leave. At his current level, Galarion could give anyone in the party detect magic, and at his next level, he could give anyone darkvision and see invisibility. At level 11, he could give anyone tongues and arcane sight. In particular, darkvision and see invisibility for the whole party seem a little bit overpowered.


Its worth noting that since both dominate person and hold person are mind affecting compulsions that dictate the actions of the target, two people casting them on the same target would result in a battle of wills (opposed charisma check) to determine which effect takes precedence. So the hold person spell that Galarion casted might not have actually taken effect.

I hadn't considered that, good point!



Edit: Also, unless you're using some kind of variant, Detect Magic cannot identify exactly what spells are in effect, just the schools of magic. So he would see an enchantment and a necromancy spell on him.

I'm assuming he passes the DC 20+spell level spellcraft (http://www.d20srd.org/srd/skills/spellcraft.htm) check to identify what the spell is once he detects the spell's aura, strength, and school of magic. With a decent intelligence bonus and max ranks in spellcraft, he could safely take 10 on the check, so it's pretty much a given that he'd figure it out after using detect magic.