Wondrous Item, Artifact (Requires Attunement)
The Apokalypsis Stone is a colossal, rune-carved granite orb ten feet in diameter. It originates from the world before Grimnir (see the book Reavers of Oath and Ruin), devoured by the mighty Yoten who still whisper through the stone. The artifact is beyond mortal making and predates even Thylea, being brought here by Lutheria from a godless cosmos.
Portal to the Lost Lands**.** If a Celestial dies within 100 feet of the Apokalypsis Stone, a portal leading to the Lost Lands opens. The portal has a 10-foot Radius and is centered on the Apokalypsis Stone. The portal stays open for 1 minute. If two more CR 15+ Celestials die within 100 feet of the stone while the portal is open, the portal becomes permanent.
Only a Celestial or creature with the Yoten tag can attune to the Apokalypsis Stone. While attuned to the stone, you gain the following powers:
Blood of the Yoten***.*** You have Immunity to Necrotic and Psychic damage. You have Resistance to all other damage types.
Breaker of Chains***.*** As a Bonus Action, you can choose one creature the Legendary Resistance trait within 120 feet of you. That creature cannot use its Legendary Resistance for 1 minute.
Whispers of the Forgotten***.*** You can cast the Foresight spell. Once used, this property can’t be used again for 7 days.