Best forms for advanced phrenic half-fiendish phasm? [Archive] - Wizards Community

Post/Author/DateTimePost
robertliguori

05-11-05, 09:47 PM
So, advance a phasm to 45 hit die, and make it phrenic and half-fiendish. We now have a CR 20 challenge, by the book.

However, this is a challenge that can take the Metamorphic Transfer feat many, many times, and assume the supernatural abilities of normally-polymorphable creatures and outsiders under 15 hit dice.

So, what forms from the polymorph library work best when cranked up to 45 hit dice? Anything with a nasty hit-dice-based save-or-die SU like the medusa is quite nice, as is anything with a high CON mod (because multiplying a high number times 45 and adding it to your hit points is always fun).

Since the CR is under 20, I'm not using epic material. Given these limitations, what kind of forms would be the most amusing?