Sunny had figured out that taking out Beastmaster would not be easy, so he employed a bit of subterfuge.
Allowing his shrinking Shell to crumble sooner than it would have otherwise, he used the resulting tide of shadows to send one of his incarnations away unnoticed.
His strength diminished, and the pressure on his mind increased as the shadow fled — not enough to break him, but enough to make him sway.
He used the Lord of Shadows to draw the attention of Lonesome Howl, Silent Stalker, Ceres, and Siord — just enough for the stealthy incarnation to reach Beastmaster. Then, he emerged from the shadows, manifested a sharp stiletto, and pressed it against her neck.
At this point… he was actually unsure what to do.
Taking the beautiful enchantress hostage had seemed like a good idea before, but now that he was standing next to her, barely lucid under the assault of her Aspect, Sunny realized that she was far too dangerous to keep alive.