I'm having a little trouble wrapping my head around spellcasting when it comes to multiclassing as a sorcerer. Say I was a druid and wanted to multiclass to a primal list sorcerer. Could I use wisdom based caster DC to cast the spells sorcerer grants? Or do I have to keep separate lists for each? And how about how I cast the spells. In the description of the sorcerer archetype, it says you can cast spells like a sorcerer. Does that mean I can substitute material components for somatic? If so is it only for the spells the sorcerer archetype would grant?
I had thought before I got the rulebook that if you mixed classes that had the same spell list that it would be a bit more seamless but I'm a little lost on the specifics.
You don't get anything that isn't specified. (literally so, as it's the last line of the paragraph)
As a druid, you're already trained in primal spell attack and spell DCs.
From the sorcerer dedication if you pick elemental or fey, you use that same tradition, so if you were a 7th level druid all your primal spells would be cast at expert (including sorcerer spells).
However, the dedication specifies that you use Charisma as the key spellcasting ability for sorcerer archetype spells.
So, if you had a 18 wisdom and 14 charisma, your spell attacks would be
7(level)+4(expert)+4 (wisdom) or +15 for druid spells and
7+4+2= +13 for sorcerer spells (or DC 25 and 23 respectively)
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As for separate lists, yes, they are.
replacing material component... I'm not 100% sure. On the one hand that's part of sorcerer spellcasting. On the other, the dedication does say you gain no other abilities. If you do get it, it would only be for sorcerer casting, however. That seems clear.
I suppose it's my own misinterpretation based off of second hand book information. To be honest I kind of thought that was the case but was hoping I missed something. But as for the replacing material components, I'm a bit more unclear. At least they're fairly clear with focus points mixing. Thank you for your input.