You mentally contact a demigod, the spirit of a long-dead sage, or some other mysterious entity from another
plane. Contacting this extraplanar intelligence can strain or even break your mind. When you
cast this spell, make a DC 15
Intelligence saving throw. On a failure, you take 6d6
psychic damage and are insane until you finish a
long rest. While insane, you can't take
actions, can't understand what other creatures say, can't read, and speak only in gibberish. A
greater restoration spell cast on you ends this effect.
On a successful save, you can ask the entity up to five questions. You must ask your questions before the spell ends. The DM answers each question with one word, such as yes, no, maybe, never, irrelevant, unclear (if the entity doesn't know the answer to the question). If a one-word answer would be misleading, the DM might instead offer a short phrase as an answer.