"Rogier", said Oirhandir softly, "whatever it is, it's been here a long, long time. Probably longer than any of us have been alive, and I've already lived longer than all but a handful of men. If we post a guard, how much mischief can it do in one more night?"
The elf continued: "We will spend the night here, no matter what happens. We cannot reach the mill, or any other place dry enough to sleep on, by nightfall. And what if we don't find the source of the evil by nightfall? After dragging yourself across the swamp and through this cavern all day, will your tired bones rest any easier knowing that it's still down here?"
He paused. "I don't know the ways of your god, Rogier. But if there is evil afoot, I would think that he would want you to gain your full strength and strike a decisive blow, rather than spend the last of your strength seeking the unknown in every nook and cranny of this place."
"I have spoken much. But know full well that whatever this party decides, I will give my best effort to brining it to pass." He retrieved the broken pieces of the ancient vial from his sack. "I had hoped to do this tonight, so that I could rest and have my magical powers at their peak tomorrow. But perhaps we will learn something from this that will put our minds in agreement." He squinted at the hulking half-orc. "Gath, I give you my word that this witch-work will cause you no harm. It is safe."
With that, he began chanting in an ancient tongue that was and was not the speech of dragons. As he spoke, he begain wringing his hands together as if he was shaping a ball of clay between them. Slowly, the fragments of the vial softened and began to knit themselves together. After a few moments, what was once a handful of broken pottery had shape once again. And if it was not as perfect as new, it once more had form and definition. Oirhandir held the little vial up for all to see, and studied it closely as he turned it in his hand. Were there only stains from some liquid dried up ages ago, or were some other markings now visible once the pieces had been joined together?
OoC: I know, it's just a simple Mend spell, but maybe we'll learn something from it.