In God of War Ragnarok, The Word of Destiny is the ninth objective in The Path main story quest line. Playing as Kratos and accompanied by Freya and Mimir, you must travel back to Midgard in search of the Norns. You don’t know where the norns are, but Speki and Svanna, the wolves pulling your sled, certainly do. They will lead you to the King’s Grave, or at least as close to it as the sleigh can go. Open the map in your journal when you get there and you’ll see that there’s only one collectible in King’s Grave, but it’s marked “Undiscovered”. You’ve probably figured out by now that this means it’s one of those collectibles that requires you to return after progressing further on The Path and unlocking the relevant item or Favor side quest. The question is how far?
Related: What are the undiscovered collectibles in Lake of Nine in God of War Ragnarok?
How to get the undiscovered collectible in King’s Grave in God of War Ragnarok
As you might have guessed from the region’s name, the undiscovered collectible in King’s Grave is a Berserker tombstone, and it’s a special one. This one cannot be discovered and destroyed until you discover and destroy the other nine slayer tombstones that are in the other realms. You can’t really discover and destroy any of them until you’ve completed The Word of Fate, which is the quest you’re on when you first visit King’s Grave.
If you return here before destroying the other nine berserker tombstones, you’ll be able to reveal the berserker tombstone on your map, but you won’t be able to find and destroy it. You’re forgiven if you think this is a bug, but it’s not. It’s designed; just not very well signposted. Once activated, the King’s Tomb Berserker Tombstone will appear on the small mound of earth in the middle of the standing stones.
https://www.gamepur.com/guides/what-is-the-undiscovered-collectible-in-kings-grave-in-god-of-war-ragnarok What is the undiscovered collectible in King’s Grave in God of War Ragnarok?