In the core series games
If the holder is hit by a Water-type damaging move, it consumes the Absorb Bulb and its Special Attack is increased by one stage.
It is not consumed if the holder already has +6 Special Attack stat stages (unless its Ability is Contrary, in which case it won't activate if the holder has -6 Special Attack stat stages). It is not consumed if the holder is unaffected by the Water-type move due to its Ability (such as Storm Drain) or is protected from the Water-type move.
If multiple Pokémon each holding an Absorb Bulb or Luminous Moss are hit by a Water-type move at once, each hit Pokémon will consume their Absorb Bulb or Luminous Moss before Symbiosis transfers any item (including these items).
|| A consumable bulb. If the holder is hit by a Water-type move, its Sp. Atk will rise.
| An item to be held by a Pokémon. It boosts Sp. Atk if hit with a Water-type attack. It can only be used once.
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