He slowly raises his hands and unsheathes the Moonblade, blue flames flickering along its revealed length. "You know my sword, my companion, would never let an imposter wield it. But..." He gently slices his palm with the blade. Indeed, though his skin reflects a pale blue from the sword's light, it certainly isn't the pasty gray of the doppelgangers'.
A trickle of blue flame passes over Xan's hand, and the wound heals.
The slender elf turns the Moonblade and lays it across his palms, offering it to Aiwe. "If doubt still casts its somber shadow, ask it yourself."