Each of these is an undead creature listed in Bestiary 4 with complete instructions for creating one. An isotoq is an intelligent floating eyeball, and a necrocraft is a custom-made amalgamation of undead bodies stitched together. (Beheadeds & their creation are in this book, too, though I barely care about them.)
The list of approved Additional Resources(see below) omits isotoqs as permitted familiars but makes no other statements or implications about either creature. As a PC, can I make them, with them vanishing at the end of an adventure like any other animated dead?
Whether they *should* be PFS-legal is a different question. On the pro side,
a) isotoqs cost 2 more spells and serve a different function (spy) than standard meatshields, having nothing for combat but the equivalent of a weak 1st-level wand.
b) necrocrafts cost 1 more spell and allow originality in their options, and
c) beheadeds are also customizeable and cost 200 gp & 1 additional spell, probably too much for their limited worth.
On the con side, isotoqs & beheadeds have intelligence (perhaps creating ethical questions), and necrocrafts may be overpowered in their strength & special abilities.
As long as I'm on the subject, the wording for isotoqs' sensor link is ambiguous. I can see things that are within 60' of the isotoq, or I can see things if the isotoq is within 60' of me? The fluff about necromancers using them for patrol duty suggests the former.
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Pathfinder Roleplaying Game: Bestiary 4
Animal Companions (p. 311): dimorphodon, giant seahorse, giant tortoise, giant weasel, giraffe, stag, styracosaurus, trumpeter swan, velociraptor, and walrus are legal for play; Familiars: all familiars listed on pages 96-97 and the almirajes, giant flea, greensting scorpion, nosoi psychopomp, nycar, pooka, and scarlet spider are legal for play; Feats: none of the feats are legal for play for PCs, animal companions, or familiars unless specifically granted by another legal source; Other: all creatures in this book are legal for polymorph effects (including a druid's wild shape ability) within the boundaries of each spell or ability's parameters. All languages found in this book are available for a character to learn with the linguistics skill.
Animate Dead only creates regular Skeletons and Zombies (as per the CRB).
All other Undead capable of being created via Animate Dead have their creation rules outlined in the Bestiaries, and none of those rules are listed as legal on the Additional Resources document.
