Primordial Sea is a powerful ability introduced in Generation VI of the Pokémon series, specifically as the signature ability of Primal Kyogre. This ability transforms the weather upon the Pokémon's entry into battle to a condition known as "heavy rain." Here are the detailed effects and interesting facts about Primordial Sea:
Unlike regular rain, heavy rain summoned by Primordial Sea cannot be overridden by standard weather-changing moves or abilities. Only other primal weather abilities like Desolate Land or Delta Stream can alter it.
Enhancement of Water-type Moves:
Heavy rain significantly boosts the power of Water-type moves by 50%, providing a considerable advantage to Water-type Pokémon using their STAB (Same Type Attack Bonus) moves.
Neutralization of Fire-type Moves: -