Q307: When using Alter Self, do the bonuses from grafts carry over to the new form? Specifically, Stony Plating (Magic of Eberron, 133), which effectively gives a character permanent non-magical natural armor by implanting rocks in their chest.
Selfish bump: question 307 at the bottom of page 46 could use some love if anybody happens to know about how Alter Self interacts with grafts.
A307: As per the following text taken from the spell-
"You acquire the physical qualities of the new form while retaining your own mind. Physical qualities include natural size, mundane movement capabilities (such as burrowing, climbing, walking, swimming, and flight with wings, to a maximum speed of 120 feet for flying or 60 feet for nonflying movement),
natural armor bonus, natural weapons(such as claws, bite, and so on), racial skill bonuses, racial bonus feats, and any gross physical qualities (presence or absence of wings, number of extremities, and so forth). A body with extra limbs does not allow you to make more attacks (or more advantageous two-weapon attacks) than normal."
Seeing as how your body is 'replaced' with a standard form of the new body, the graft is inert until you revert back to your original form, unless you somehow had the opperation done while you were alter-self'd. If that's the case, that graft may potentially go away if/when you revert to normal, though you'll still have lost 4hp permanently.