NodeCraft
An Oval Charm is an accessory. It is not an item; rather, it can be seen directly from the player's inventory.
It can be obtained by completing one national dex of Pokémon; for example, catching all of the Pokémon from the Kanto region (or generation 1), Pokémon 1-151, will grant you the Oval Charm.
It will increase the rate of egg production in any active ranch blocks.
