From publisher blurb:
Pathfinder Second Edition is here! Vorlen Publishing is excited to introduce one of the first fully customized third party classes to use in Pathfinder Second Edition Adventures. The Studied Summoner brings a new set of abilities and features, rounding out a party in need of quick and dispensible minions to throw at overwhelming threats.
Utilize the Occult spell list by scribing and preparing spells from a Grimoire.
Gain access to Summoning Spells not normally available to an Occult spellcaster.
Prepare extra spells daily solely for the purpose of summoning.
Play the Necrologist, one of the Studied Summoner specializiations, to summon undead minions.
Simplify summoning all together through use of the new variant spell, Summon Creature.
Summon new creatures like Bob, the loyal earth elemental, or the celestial Protector Archon.