Type and Subtype
Polymorph spells allow their target to appear to be a creature of a different type and subtype and grant the target some benefits related to the base creature’s capabilities. Despite these changes, the target’s type and subtype remain the same.
More powerful spells grant the target extra benefits based on the chosen type or subtype, as noted in the spell description. Those benefits follow. Taking the appearance of a type or subtype not listed below doesn’t grant the target any related abilities.
Source
Alien Archive 2 pg. 144
Changing a target that isn’t a construct into a constructed form grants it a +2 enhancement bonus to saving throws against disease, mind-affecting effects, necromancy effects, paralysis, poison, sleep, and stunning. Source Alien Archive 2 pg. 144 |
Changing a target that doesn’t have the elemental subtype into an elemental form grants it a +2 enhancement bonus to saving throws against paralysis, poison, sleep, and stunning. The target is unflankable while in elemental form. A fire elemental form is immune to fire, vulnerable to cold, and cannot grant cold resistance. Source Alien Archive 2 pg. 144 |
Changing a target that isn’t a plant into a plant form grants it a +2 enhancement bonus to saving throws against mindaffecting effects, paralysis, poison, sleep, and stunning. Source Alien Archive 2 pg. 144 |
Changing a target that isn’t undead into an undead form grants it a +2 enhancement bonus to saving throws against mind-affecting effects, necromancy effects, paralysis, poison, sleep, and stunning. Source Alien Archive 2 pg. 144 |
Changing a target that isn’t a vermin into a vermin form grants it a +4 enhancement bonus to saving throws against mind-affecting effects. Source Alien Archive 2 pg. 144 |
