Multiple questions about Arrow Eruption

[Bugromkiller]

I will be playing a gestalt slayer/ Wizard Arcane archer and I have lots of questions on what work and what does not work with the spell Arrow Eruption.

1) Are the attack penalties based on the current target or the original target. Example: does the cover to my original target apply, or to my targets or both? Same thing for the target in melee or the range penalty.

2)a) If my original attack is a sneak attack, do all my new arrows are sneak attack if I am no longer hidden/invisible?
b) Assuming they are sneak attack, are they sneak if they are farther than 30 feet from me but still within 30 feet of the corpse
c) If I widen the range of the spell to 60 feet, are they still sneak?

3)a) If my original attack was an assassinate slayer talent, are my created arrow also assassinate?
b) If no, are they on one target if take the action to study the target and then I cast a quickened arrow eruption.

4)a) Is the seeker arrow/ phase arrow from the arcane archer classed as a one time bonus that cannot be duplicated by the spell

5) If I use the magic ammunition Phase arrow, Do I need line of effect from the corpse to the target or as long as i can target from my line of sight the arrow will be launched.

6) Is non-magical add on to the weapon like poison also duplicated?

[Diego Rossi]

Arrow Eruption don't bypass other limitations of the abilities you use.

1) As written, you launch the attack from your current position, so you apply the modifiers from your current positions against the positions of the targets of the attacks.
So you use what cover or lack of cover affect the current attack, not what affected the previous target.

2) As above. If you meet the conditions to make a sneak attack, it applies (there are problems with applying sneak attack damage to multiple targets at the same time, but I think that this spell bypass them).
So if you are still hidden/invisible, you can deal sneak attack to targets withing 30' from your current position.
If you have been detected or you are further than 30' away, you can't.

3) a) No.
b) No.

PRD wrote:

To attempt to assassinate a target, the slayer must first study his target for 1 round as a standard action. On the following round, if the slayer makes a sneak attack against the target and that target is denied its Dexterity bonus to AC, the sneak attack has the additional effect of possibly killing the target.

Standard action to study + quickened spell isn't Standard actio + attack in the following round.

4) They are one time bonuses. And even if they weren't' they are targeted against specific opponents. A copy of that effect would target the same opponent, i.e., the corpse.

5) As written, the spell don't target the corpse. But you need LOS to the center of the burst area.

6) No, the spell don't say that it duplicate poisons.