[Ravanys' Place]

Nothing happens until Sardus goes outside, so there's that.
Unfortunately, as soon as he settles in to actually do the torching, a few things go wrong at once.

It starts with a distant pop and small flash of light from somewhere up above, as a pair of what look to be bowling balls drop to the ground some distance in front of Sardus.
This is very immediately followed by a blast of energy directed straight down towards him, intended to paralyze in an overloading pulse of magical energy. Usually just shorts out the body's muscular-nervous systems for awhile.

Lastly, a large, dark shape plummets from the sky in a roiling wave of that hideous chaotic signature Sardus is supposed to be specifically looking for. Their intended landing destination is very directly between him and the door back inside.
Some form of magic seems to be deliberately obscuring most of the finer details, but it looks a bit like a very tall but hunched over gorilla draped in very long, billowing fur. Sort of what you would imagine from a lion that grew its mane out over its entire body and then was posing for some sort of beauty commercial (complete with blowing fans) would look like. Only far creepier, with a shrouding haze of something around it, almost like heat shimmers.

Seems to be taking a moment to judge its next move depending on how effective the paralysis ends up being with Sardus.