There is a sharp crack as something brittle snaps and falls from the upper part of the doorjamb. Kalis can see little reflective bits of mineral as two pieces of mica descend past his vision. The door swings open easily.
There is a flash of light from the ceiling. Instinctively looking up, everyone can see the white-hot symbol of a large eye that flares intensely. Just as it seems to reach the point of blindness, the image abruptly winks out, almost collapsing upon itself and sucking all sound into a sudden vacuum.
The silence is shattered as a visible aura of force explodes outward. A crack of thunder accompanies this wave, loud enough to bring you to the point of deafness in its intensity. The door practically disintegrates, and the interior of the room is thrown into chaos as loose object are destroyed and tossed about.
OOC:
Everyone must make a Constitution saving throw vs DC 14 for half damage as the Shatter spell activates.