Crippling Extra Limbs

If you have more than two of a par-
ticular limb (arm, leg, etc.), a crippling
blow is injury over HP/(number of
limbs of that kind); e.g., if you have
four arms, injury over HP/4 cripples
an arm.
If you have more than two of a
given extremity (hand, foot, etc.), a
crippling blow is injury over HP/(1.5 ¥
number of extremities of that kind);
e.g., if you have four feet, injury over
HP/6 cripples a foot.