Raghnall maintains his balance and crosses the chasm. On the other side he sees a slight glimmer for a faint second, but the light does not pass over it.
Anyone else crossing it's acrobatics DC 10, disadvantage for the slick surface, advantage for the rope, (cancels out) no check if you crawl. Failure by more than 5 slips and has a dex save to grab onto the edge.
Thael ties a rope around himself, and gives one end to the person behind him, and one to the person in front. He mumbles a few arcane words and follows his cousin.
[SBLOCK]Apologies for my unannounced absence. Family stuff came up, and I was heavily distracted for a while. I think it's mostly settled down now.[/SBLOCK]
Once across the chamber seems to open up ahead. A faint candle-glow is reflected off the walls ahead. At best, it would emit dim light in a 5 foot radius.