When Arnold's eight-legged body started blurring, Ves and Ranya knew they were about to witness something special.
The sensors pointed at Arnold couldn't really make sense of what was happening. They registered the blur and detected a number of odd fluctuations in numbers that weren't supposed to wobble in the first place.
Unlike Ranya, Ves had no fancy lab equipment to help him measure and record the details that he wished to examine. He had to rely on himself to perceive what Arnold attempted to accomplish.
Just before the arganid's body started to blur, Ves already perceived the small exobeast exciting something from his head. This pretty much proved that his latest acquisition was definitely performing some sort of spiritual trick as opposed to activating a purely racial ability that every arganid clisenta possessed!