Stat stages
Stat stages are temporary in-battle modifiers from -6 to +6 applied to a stat by moves and abilities
A positive stage n multiplies the stat by (2 + n) / 2 and a negative stage by 2 / (2 - n), so +6 gives 4 times the stat. Swords Dance raises Attack by two stages. Stages reset when the Pokémon switches out, except where a move such as Baton Pass carries them.
Main-series games; introduced in Generation I, Red and Green.
2 later changes
- Gold and Silver gave Special Attack and Special Defense separate stages.
- Gold and Silver added Baton Pass, which passes stages to the replacement Pokémon.