Mewtwo GX (78/73) [Sun & Moon: Shining Legends] CRU052 or Effect Monster's effect that

or Effect Monster's effect that destroys a card(s) on the field

it loses 300 ATK and DEF for each A-Counter during Damage Calculation only

prevent the next 2 damage that would be dealt to Oldhim this turn

you can reveal 1 Fusion Monster from your Fusion Deck and send 1 of the Fusion Material Monsters listed on that card from your Deck to the Graveyard

inflict damage to your opponent's Life Points equal to the original ATK of the destroyed monster

Mewtwo GX (78/73) [Sun & Moon: Shining Legends] CRU052 or Effect Monster's effect thatSet: Sun & Moon: Shining Legends Type: Psychic Rarity: Secret Rare Retreat cost: Colorless,Colorless