
TobiasBlues |

So I've been batting this PFS character idea around in my head, but am coming up with a bit of a roadblock. I am thinking of doing a magus with the Kapenia Dancer archetype, but would also like to add in the Hexcaster archetype as well.
I've looked at the rules for combining archetypes and understand that if both archetypes replace or change a class ability, they can't be taken together. My question comes up from the fact that both archetypes give addition options to the magus arcana ability, granting new options for the magus to take.
Is that enough of a change to the ability to make it illegal to use both archetypes, or since it is an optional change it's okay?

Diekssus |

personally my interpretation is that you cannot trade out the same feature twice, and if they invalidate a feature its invalid as well.
Choice and options are not forbidden this way.
http://paizo.com/paizo/faq/v5748nruor1fz#v5748eaic9qnl
the famous monk example.
The extra arcana options do not exclude each other, you can obviously not use this to gain 2 abilities for trading in only 1 arcana.