An Exp. Share is a held item that awards experience to the holder even if it does not participate in battle, as long as the holder is not fainted and in the player's party. If the Pokémon does not participate in battle, it will gain 50% of the normal experience and the full amount of EVs from the defeated Pokémon. If a Pokémon with an Exp. Share participates in battle, it will gain the full amount of experience and EVs as normal. Multiple Exp. Shares will not interfere with each other; all Pokémon holding an Exp. Share will receive the full effects of the item. It can be obtained as a tier 2 special drop. It is a possible drop from uncommon and rare boss Pokémon, or from a wild Arceus.
Before Reforged, this item had the following recipe. It was removed due to many held items being far too easy to make.