(from Sepulchrave's story, emphasis added)
"I…" The Bard began, but never finished.
Because Mostin, whether in a fit of paranoia, or anticipating an inevitable coming to blows, acted unilaterally, and made a decision which would change the way that the travellers related with the inhabitants of Afqithan. To the others, it also demonstrated the power that an arcanist of Mostin’s stature could wield in Faerie or any of its orbiting demiplanes. He spat a number of syllables out, prompting bows to be drawn or shot, and eliciting a desperate but ineffectual gesture in response from Koilimilou.
**
Ortwin experienced a strange sensation which lasted less than a fraction of a second – the merest flash in his mind. Shomei immediately recognized it for what it was – a temporal discontinuity in their vicinity. After it had passed, there was a colossal discharge of magical energy, and the tapestry of reality threatened to rupture completely before it rewove itself. Echoes of Sonics hung in the air.
The three Jariliths, Shupthul, the Succubus and twenty-six of the thirty Hell-hounds had vanished: the Captain’s empty armour and arms collapsed to the ground in a noisy rattle. Eleven of the Loquai had been petrified, along with six of their griffon mounts – some frozen with grotesque expressions of terror upon their faces. One other sidhe was dead from fear, and all but one of the remaining steeds had likewise been slain by a phantasmal killer. Each of the umbral quicklings had been reduced to a pulp by sonic attacks. The female sidhe sat upon a stone griffon with a vacant expression on her face.*
The last griffon attempted to flee with its petrified rider, along with the four hell-hounds. Mostin turned them into flounders, which flapped impotently in the air before suffocating.
[...]
*Mostin’s attack consisted of a time stop, empowered and maximized by the magical trait of the plane to 6 rounds of virtual time, during which he cast haste, a chained flesh to stone, a chained phantasmal killer, two banishments directed at the demons and hell-hounds, disintegrations targeting Shupthul and the Succubus Iemazai, an insanity on Koilimilou, and various sonics. There were multiple redundancies in the spells – some of the Loquai were struck by both the flesh to stone and phantasmal killer. Shupthul avoided petrification but was disintegrated. Koilimilou succumbed to insanity. The save DCs were 25+ spell level because of Mostin’s augmented Intelligence, and even with the chained spells, most of the targets needed to roll 20s. Koilimilou initially attempted to counterspell the time stop with a greater dispelling she had readied, but failed.