Bestiary of Metamorphosis

This grimoire fancifully illustrates the spells you inscribe within it with illuminated drawings of creatures that have never existed, the pictures changing to depict new ones from time to time.

Activate [1] envision (polymorph, transmutation)

Frequency once per day

Requirements You're under the effect of a polymorph spell you prepared from this grimoire that offers a choice of multiple forms

Effect You transform into a different form allowed by the polymorph by bending and molding the spell's energy. This reduces the spell's remaining duration by half.