Detho's Delirium

You touch a creature that is asleep or unconscious. The creature is Charmed. While charmed this way, it begins speaking at random, in all languages it knows, on random, rambling topics. It cannot hear questions or be magically induced to give specific answers.

The creature may utter names, passwords, directions, and secrets, but those are often lost in random ramblings, and a listener would have to roll an intelligence check (DC up to the DM considering the information) to attempt to discern what any given topic is about.

If the creature is awakened at any time, the spell ends.