When you reach the end of the principal story quest in Pokémon Legends: Arceus, it'll be time for you to achieve out to the Clan leaders and learn nearly the precious treasure they have. Adaman volition be waiting for yous on the shores of Lake Valor, and if yous speak with him, he'due south willing to evidence you that treasure if you can defeat him in a battle. This guide will cover how to complete The Diamond Clan'due south Treasure request in Pokémon Legends: Arceus.

You lot can find Adaman to the north of the Diamond Clan campsite in the Blood-red Mirelands. When you lot approach him, he'll desire to share a precious treasure that he discovered not also long ago that is sacred to his clan. Nevertheless, he will non share or give y'all the treasure until you've defeated him in a battle. Once you accept, you'll have to fight him.

Adaman will be u.s. 3 Pokémon at the same time. He volition take Leafon, Umbreon, and Vaporeon. The Leafeon will be at level 64, whereas the Umbreon and Vaporeon are at level 32. You'll take to battle all three of them, and of the iii, we recommend focusing on the Leafeon first.

Leafeon is a Grass-blazon Pokémon, making it weak to Fire, Water ice, Poison, Flying, and Bug-blazon moves. Of those choices, we recommend focusing on using Burn down or Water ice-type attacks to quell Leafeon during the battle. You'll too want to primarily focus on Leafeon because, while the other 2 do accept attacks and are annoying, they're significantly weaker than Leafeon.

After beating Leafeon, you lot can move on to Vaporeon and Umbreon in whatever order y'all'd like. Vaporeon is a H2o-blazon Pokémon making it weak to Electric and Grass-type moves, whereas Umbreon is a Dark-type and is weak to Fighting, Bug, and Fairy-type moves.

Screenshot by Gamepur

Once you've completed the battle and defeated Adaman'due south Pokémon, he will offer an particular yous can utilize to change Dialga's forme, the Adamant Crystal.