As a master anyform savant, you are able to not only assume the physical form of a creature, but also to mimic its soul. You gain all the extraordinary and supernatural special abilities of a single imprinted creature. If an extraordinary or supernatural ability would require unusual anatomy, it doesn’t function unless you also have that anatomy. If you are not an anyform savant and are under the effect of another Formbound power that grants you characteristics of an imprinted form (such as assume form), you may only assume abilities from the imprinted form that the existing effect is using. For instance, if you are under the effect of assume form using the imprint of an archon, borrow essence could only grant you an archon’s abilities, and not the abilities of any other imprint.