Simple — mức sử dụng & thống kê trong Smogon SV DOUBLESUU

Each stage of this Pokémon's stat modifiers acts as two stages. These doubled stages are still limited to a minimum of -6 and a maximum of 6.

This Pokémon can still accumulate less than -3 or more than 3 stages of stat modifiers, even though the extra ones have no effect after doubling.