How to get Extra Prepared Spells for Arcanist?

[Harliquinn Whiteshadow]

Are there feats, traits, items, etc. that work for the Arcanist to increase their Spells Prepared for the day?

Second question, Do they qualify as "Spontaneous Casters" for those feats, items, etc. that add extra Spells Known (Though those aren't as useful for an Arcanist)

[LazarX]

1. Ring of Wizardry. will double your spells prepared for a spell level, but not slots that you can cast.

2. No. Arcanists do not operate on the "Spells Known" mechanic that governs Sorcerers and Oracles and the like.

[Chess Pwn]

Feats and other effects that modify the number of spells known by a spellcaster instead affect the number of spells an arcanist can prepare.

So anything that helps spontaneous in how many spells they know increase an arcanist spells he can prep for the day.

[Fearspect]

The item you are looking for is called a Spell Lattice, also found in the Advanced Class Guide.

The Ring of Wizardry would probably only double the number of spells you can cast at a spell level, not the spells prepared. When it talks about 'Spells per day' in the Arcanist writeup, it uses that to mean the number of casts and not your preparation (for example, having high Int does the same).

[Harliquinn Whiteshadow]

Thanks everyone!

[Dragonriderje]

The feat "Expanded Preparation" (Advanced Class Guide) can give you either an extra preparation slot for your highest spell level, or 2 extra slots for a level lower than your highest.