My GM is letting me play a Samsaran with the Mystical Past Life racial trait, yay!
Mystic Past Life (Su):
You can add spells from another spellcasting class to the spell
list of your current spellcasting class. You add a number of spells
equal to 1 + your spellcasting class’s key ability score bonus
(Wisdom for clerics, and so on). The spells must be the
same type (arcane or divine) as the spellcasting class you’re
adding them to. For example, you could add divine power to
your druid class spell list, but not to your wizard class spell
list because divine power is a divine spell. These spells do not
have to be spells you can cast as a 1st-level character. The
number of spells granted by this ability is set at 1st level.
Changes to your ability score do not change the number of
spells gained. This racial trait replaces shards of the past.
He's given me a few restrictions to make it a bit less broken though. First I have to take my spells from their full casting class list when available (no 2nd level haste from the summoner list :(, I have to take the 3rd level Wizard version). Second when taking spells from a 3/4 or 1/4 casting class's list I don't gain access to the spell until that class would gain access to it and I cast it as if it's spell level was equal to the spell level of the highest level spell I could cast at that level. So for example if I wanted to take the 4th level Bard spell Dance of a Hundred Cuts I wouldn't be able to learn it until 10th level (when bards get 4th level spells) and would cast it as a 5th level spell (the highest level of spell a witch can cast at 10th level).
I'm maxing out my Int to 20 so with these restrictions in mind what 6 spells should I take? In essence, what are your favorite arcane spells that aren't on the Witch's spell list? I'm also thinking of playing a Druid (I just want to be a witch of the wilderness and Druid fits that just as well) so non-Druid divine spells are welcome too. So really what spells, arcane or divine, do you guys think would be cool all to have on one caster?