Bard spell for an arcanist?

[Belafon]

Specifically I’m trying to be able to prepare good hope as an arcanist spell.

So far, I’ve come up with “be a Samsaran” but I’m hoping for other ways.

[Ferious Thune]

Ring of Spell Knowledge IV would do it, if your GM believes it works for an Arcanist. There's a fair amount of ambiguity about it. You would have to cast it out of a 4th level slot.

[avr]

The pathfinder savant or daivrat PrCs are other possibilities. I don't think a ring of SK would cut it, an arcanist isn't technically a spontaneous spellcaster.

Given what you'd likely need to pay for this, contagious zeal or multiple castings of heroism might be a relatively good option. The untold wonder spell and/or the encouraging spell metamagic might help.

Edit: if being able to affect the targets with good hope rather than preparing the spell might be enough, there are magic items - a wand of good hope, a suzerain scepter or a custom staff if those are available.

[Belafon]

Found another complex way to do it but not as "costly"

Worship a deity with the Chaos domain, specifically the Revelry subdomain.

At 10th level or above, an arcanist can take/retrain to the Arcane Discovery arcanist exploit. As the Arcane Discovery, take Faith Magic. Choose good hope and I can prepare it in a 4th level slot.

I was hoping to do it a lot sooner than 10th level, though.

I am looking to actually get it on my spell list because of the many things you can do to a spell known/prepared but not with wands. I prefer good hope to heroism specifically for the damage bonus.

[avr]

Contagious zeal has a damage bonus among other things, and being a 3rd level sorc/wiz spell an arcanist can get it at 6th level. You can't cast it much in advance but you should only need to cast it once in a combat.

[Melkiador]

Good hope is a nice spell, but is there a reason you're wanting that spell over other options available to the arcanist?

[Belafon]

It’s not just good hope. I’m making a buffing arcanist (brown-fur transmuter) and entering the Magaambyan Arcanist prestige class (which gives access to Druid spells) I wanted to add some of the really good bard-only buff spells to my spell list to top it off.

Ideally I was looking for something like Fey Spell Versatility or Unsanctioned Knowledge, but I’d settle for a way to add one or two spells. Good hope is the example because it’s the first one to spring to mind, and also one of my favorite bard spells.

[blahpers]

Spell research. Or pick up Hollis's lucky rock.