Once during your turn (before your attack), if Slaking is your Active Pokémon, you may flip a coin. If heads, Slaking's Lazy Blow attack's base damage is 130 during this turn. If tails, Slaking can't attack or retreat during this turn. (If Slaking is no longer your Active Pokémon, this effect ends.)
Disclaimer: The following data is based on sale history from a third party source. Data is updated about every 5 days. This data does not serve as a value guarantee.