Solar Power
Increases Special Attack to 1.5× but costs 1/8 max HP after each turn during strong sunlight.
Full effect
During strong sunlight, this Pokémon has 1.5× its Special Attack but takes 1/8 of its maximum HP in damage after each turn.
In-game description
In harsh sunlight, the Pokémon's Sp. Atk stat is boosted, but its HP decreases every turn.
Stats
Regular ability (3 Pokémon)
Hidden ability (5 Pokémon)
Only available through specific encounters (Dynamax Adventures, Tera Raids, hidden grottoes, etc.).