Adamant Orb

From Pixelmon Generations

Adamant orb.png
An Adamant Orb is a held item that increases the strength of Dialga's Dragon- and Steel-type moves by 20%. It has no effect when held by any other Pokémon. It is a possible drop from Uncommon and Rare Boss Pokémon.

When used on a Timespace Altar that has been activated with a Red Chain, an Adamant Orb will summon Dialga.