As long as Medicham is your Active Pokémon, attacks by each player's Active Pokémon do 10 more damage to any Active Pokémon (before applying Weakness and Resistance).
Attacks
[Colorless, Colorless]Punch
30
Energy Cost: 2
[Fighting, Fighting, Colorless]Rolling Kick
40
Energy Cost: 3
Flip a coin. If heads, the Defending Pokémon is now Paralyzed.