Merlin's arms slowly faded into invisibility the further away they got from his shoulder; and what they turned into was something absolutely abhorrent and disgusting to the spirits that Eiro had just summoned. Gondos, having the best perception out of the three spirits, fused into the Demon's body. While he was already able to sense and even see magic to a degree, while being fused with a spirit, it was still much stronger and a lot more natural. And more importantly, he could experience the nature of that magic for himself.
