Create Cosmic Secret

You understand the secret whispers of the cosmos that hold the universe together. Rivaling the powers of the Old Gods, you can create a cosmic secret that no mortal can understand without descending into utter madness.

Choose a highly specific phrase, piece of knowledge or object to be the target of the secret. While this spell remains, the target cannot be spoken of, known, or seen by/to any creature except the caster.

There are several ways a creature can surpass this enchantment:

• Creatures with Truesight will see the target object
• A creature sees an image pertaining to the phrase or piece of knowledge (e.g. writing, painting, statue). A target object cannot be projected in an image.

If any sort of magic allows a creature to see past this enchantment, the creature must make a wisdom saving throw against the spellcaster's DC. On a failure, the creature takes 14d6 psychic damage and gains a madness effect:

• If the creature fails within 5 of the DC, they gain a random short term madness effect.
• If the creature fails by 5 or more, they also gain a random long term madness effect.
• If the creature fails by 12 or more, they also gain a random Indefinite madness effect.

On a success, the creature only takes half damage and does not gain any madness effect. A creature reduces to 0 hp from the psychic damage rolls a 1d6. On a 1 or 2 the creature is dead and will spawn an Allip in 1d4 days. On a 3 or 4, the creature is stable but unconscious and is considered stunned until a remove curse or similar spell is cast on it. On a 5 or 6, the creature is stable and unconscious.

The caster may decide to reveal the secret themselves at a particular moment. If this is done, the effect is instantly dispelled during the caster's next round and the target can never be the subject of a cosmic secret again.