This power uses magic to turn unarmed attacks into lethal, physical damage. When participating in unarmed combat, you may do normal Stun damage or declare the use of Killing Hands and inflict an equal amount of Physical damage instead. Killing Hands may be used with Critical Strike (p. 195).
A Killing Hands attack may also be used against creatures with Immunity to Normal Weapons (p. 295) to inflict either Stun or Physical damage; their defensive bonuses do not count against Killing Hands. Killing Hands can also be used in astral combat (see Astral Combat, p. 193).