When push came to shove, and magical might dueled, with vines and needles and so much else running interference, the tide finally turned when a bullet aimed at the collar drove the band into Celestia's throat like she'd been punched. The alicorn choked hard, gagging against the sudden spasming of her throat muscles, and the sunlight glow faded. The collar sprang free to follow the behest of the Summoning Charm, leaving Celestia to collapse at the mercy of the incoming attacks that hopefully no one wanted to press on her abruptly-limp form.