PrC 9/10 affects multiclass casting?

[hayek]

I'm not sure what to search for with this mechanic.

If I have a lvl 10 human (Cleric 5/Druid 5) and I take a PrC like Bone Knight up to 20 that receives 9/10 casting progression from BK does this mean I now have access to spells as a lvl 14 cleric and 14 druid?

I understand for a single multiclass. E.g. Cleric 10/Bone Knight 10 would be cleric casting level 19. I can't recall ever seeing anything about how that affects your multiclasses.

[hymer]

I don't have Five Nations, but I'm pretty sure if you read the description of the advancement of the casting, it says you pick one class (often one divine or one arcane) to advance. So no. You'd have 9 advancements you could give to the two classes as you saw fit.

[Telonius]

For Bone Knight, the answer is no. In most prestige classes, there's a tag similar to this: "If you had more than one divine spellcasting class before becoming a bone knight, you must decide to which class to add each level for the purpose of determining spells per day, caster level, and spells known." So you don't get advancement in both, you have to pick one or the other. You could have Cleric14/Druid5, Cleric5/Druid14, or anything in between that. (Cleric10/Druid9, Cleric7/Druid12, or whatever).

There are a few Prestige Classes that are exceptions. Things like Mystic Theurge and Arcane Hierophant advance more than one level of spellcasting. But those always specifically call it out; the "Spellcasting" column will always have two entries listed.

[hayek]

Thanks much. I don't have a lot of the source books so things like this slide by.

[Chronos]

And even with the prestige classes specifically designed for it, multiclassing between casting classes tends to be on the weak side compared with staying with one full-time (either the class itself, or PrCs that advance it completely). Getting to tenth level as a cleric 5/druid 5 with no PrCs would leave you overwhelmingly underpowered.

[BrokenChord]

And even with the prestige classes specifically designed for it, multiclassing between casting classes tends to be on the weak side compared with staying with one full-time (either the class itself, or PrCs that advance it completely). Getting to tenth level as a cleric 5/druid 5 with no PrCs would leave you overwhelmingly underpowered.

I think you'd be right if Druid and Cleric weren't already overpowered. But that's not terribly on-topic, as this was a rules question rather than an optimization one.