A phasm is an amorphous creature that can assume the guise of almost any other creature or object. A phasm in its natural form is about 5 feet in diameter and 2 feet high at the center. Swirls of color indicate sensory organs. In this form, a phasm slithers about like an ooze and can attack with a pseudopod. It weighs about 400 pounds.
Phasms can speak Common but prefer telepathic communication.


When faced with potential danger, a phasm is equally likely to retreat, parley, or attack, as its fancy strikes.
If pursued or harassed, a phasm transforms into the most fearsome creature it knows and attacks. When seriously hurt, it changes to some fast or agile form and tries to escape.
Amorphous (Ex): A phasm in its natural form has immunity to poison, sleep, paralysis, polymorph, and stunning effects. It is not subject to critical hits and, having no clear front or back, cannot be flanked.
Resilient (Ex): A phasm has a +4 racial bonus on Fortitude and Reflex saves (included in the statistics block).
Alternate Form (Su): A phasm can assume any form of Large size or smaller as a standard action. This ability functions as a polymorph spell cast on itself (caster level 15th), except that the phasm does not regain hit points for changing form. A phasm can remain in its alternate form until it chooses to assume a new one or return to its natural form.
Tremorsense (Ex): A phasm can automatically sense the location of anything within 60 feet that is in contact with the ground, so long as it is touching the ground itself.
Skills: *When using shapechange, a phasm gains a +10 circumstance bonus on Disguise checks.

System Reference Document -> List of Creatures (SRD)
This article is a D20 reference page
The System Reference Document is a comprehensive toolbox consisting of rules, races, classes, feats, skills, various systems, spells, magic items, and monsters compatible with the d20 System version of Dungeons & Dragons and various other roleplaying games from Wizards of the Coast.

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