The [Formless] Ability allowed Soul Serpent to assume the shape of any shadow contained within its master's soul, as long as it was the shadow of a creature that was of the same or lower Class and Rank.
Once transformed, Serpent would not only look like the creature, but also inherit its traits and abilities.
…Sunny, however, was not the Serpent.
While he trained his mind and body to possess some facets of the formlessness of shadows, he was still a human. Even if he used Shadow Step to turn incorporeal, he would not be able to make use of the same mystical ability.
He could, however, command the shadows and manifest them into tangible forms.
What did it mean?
Slowly drowning in the tide of black beetles and feeling their sharp mandibles scrape against his skin, Sunny continued to fight… and think. His thoughts were desperate and feverish, but at the same time, his mind was strangely calm.