Table Manners (ABC-BG-049 N) [Arcana Battle Colosseum]

Destroy a J/resonator that has or shared the highest total cost from among all J/resonators your opponent controls. You gain life equal to the total of its ATK and DEF. Then you draw cards equal to its total cost. G, discard this card: Target J/resonator you control and target J/resonator your opponent controls deal damage equal to their ATK to each other.