Onix - Reverse Holofoil Legendary Collection - Common Card Type_Item Aggron does 40 damage to

Aggron does 40 damage to itself

Colorless Mega Punch (50)

FormStage 1 - Evolves from Exeggcute

if Sidney's Stadium is in play

Colorless Air Slash (60) Flip a coin

Onix - Reverse Holofoil Legendary Collection - Common Card Type_Item Aggron does 40 damage toRarityCommon Card TypePokmon Hit Points90 HP FormBasic Evolves from null TypeFighting Fighting Rock Throw (10) Fighting,Fighting Harden During your opponent's next turn, whenever 30 or less damage is done to Onix (after applying Weakness and Resistance), prevent that damage. (Any other effects of attacks still happen.) Weakness Grass 2 Retreat CostColorless Retreat CostColorless Retreat CostColorless ArtistKen Sugimori