If you take a level of Magus and a level of any other arcane casting class, but only chose spells you aready have as a Magus, does the 20% chance of failure still apply? I would think that the 20% failure chance wouldn't apply to spells like Magic Missle or Shocking Grasp if you prepared them from both classes, but Mage Armor which isn't on the Magus spell list would have the chane of failure.
Yes you still have the arcane spell failure if you cast it using a slot from a non-magus class.
Here's an example from the core rules of what you are talking about.
Break Enchantment. This is both a Cleric 5 spell and a Wizard/Sorcerer 5 spell. A mystic theurge prepares one casting of it in his Cleric 5th level slots, and one casting in his Wizard 5th level slot.
The mystic theurge puts on medium armor (which he is proficient with). He casts the Break Enchantment using his cleric slot, he has no arcane spell failure penalty, because he's casting it as a divine spell. However, if he the next round casts the other break enchantment spell, prepared in his wizard slot, he has arcane spell failure penalty from his armor.
Magus/Wizard is no different.
EDIT :
{quote=PRD]
Weapon and Armor Proficiency: A magus is proficient with all simple and martial weapons. A magus is also proficient with light armor. He can cast magus spells while wearing light armor without incurring the normal arcane spell failure chance. Like any other arcane spellcaster, a magus wearing medium armor, heavy armor, or a shield incurs a chance of arcane spell failure if the spell in question has a somatic component. A multiclass magus still incurs the normal arcane spell failure chance for arcane spells received from other classes.
Besides which, it's specifically called out.
If they are not cast with a magus spell slot, then yes ASF still counts.
If you take a level of Magus and a level of any other arcane casting class, but only chose spells you aready have as a Magus, does the 20% chance of failure still apply? I would think that the 20% failure chance wouldn't apply to spells like Magic Missle or Shocking Grasp if you prepared them from both classes, but Mage Armor which isn't on the Magus spell list would have the chane of failure.
You have to prepare them in your Magus slots to take advantage of the ASF removal. I'm unclear on whether they have to be "translated" from Wizard to Magus in your spellbook, but they must be in your spellbook to be prepared, so you would have to record any applicable spells from Sorceror/Bard/Summoner levels that match your Magus list.
If you take a level of Magus and a level of any other arcane casting class, but only chose spells you aready have as a Magus, does the 20% chance of failure still apply? I would think that the 20% failure chance wouldn't apply to spells like Magic Missle or Shocking Grasp if you prepared them from both classes, but Mage Armor which isn't on the Magus spell list would have the chane of failure.
Anything not cast from your Magus prepared spells would still be subject to spell failure. Of course as a Magus you have light armor prof. already so for a single feat you could take Arcane Armor and not have to worry.
If you take a level of Magus and a level of any other arcane casting class, but only chose spells you aready have as a Magus, does the 20% chance of failure still apply? I would think that the 20% failure chance wouldn't apply to spells like Magic Missle or Shocking Grasp if you prepared them from both classes, but Mage Armor which isn't on the Magus spell list would have the chane of failure.
spells prepared as a magus will have no spell failure chance.
Spells prepared as a wizard (for example) will have the normal spell failure regardless of if the spell also happens to be on the magus list.
The two preparations are independent.
Wow, shotgun response of 'NO!'. :)
Wow, shotgun response of 'NO!'. :)
Yeah, I saw 2 come in before me (showed 8 seconds on yours when I posted) and 2 more on by the time I went back to the boards. I was impressed.
DOG PILE ON THE NEW QUESTION!
On a related note would the magus and wizard need two different spell books, even if they shared some of the same spells? I tend to think yes, but wanted other feedback.
On a related note would the magus and wizard need two different spell books, even if they shared some of the same spells? I tend to think yes, but wanted other feedback.
Nope. You can store spells in a spell book. If you have two different classes that both use spellbooks, you can store your spells in the same spell book. You just have to have one copy of the magus spells in the book and one copy of the wizard spells in the book, if they overlap.
There's no difference between a spell book for a magus and a wizard, it's just how they write their spells in (just like you can take some other wizards spellbook and start recording your own spells in it).
On a related note would the magus and wizard need two different spell books, even if they shared some of the same spells? I tend to think yes, but wanted other feedback.Nope. You can store spells in a spell book. If you have two different classes that both use spellbooks, you can store your spells in the same spell book. You just have to have one copy of the magus spells in the book and one copy of the wizard spells in the book, if they overlap.
There's no difference between a spell book for a magus and a wizard, it's just how they write their spells in (just like you can take some other wizards spellbook and start recording your own spells in it).
so if i'm a wiz\magus and I know Sheild as a wiz and a magus I can use the same book, but it takes up space and costs as much as two first level spells?
Yes. A spell book is a spell book, but the formulas and way they are written are not the same all in all, close maybe but not the same.
so if i'm a wiz\magus and I know Sheild as a wiz and a magus I can use the same book, but it takes up space and costs as much as two first level spells?
Functionally, yes. It's not that you are having one spell taking up twice as much space. Instead, it's two versions of the same spell, taking up the normal amount of space.