Evilswarm Exciton Knight [BLLR-EN068] Ultra Rare

Set: Battles of Legend: Light's Revenge Card type: Xyz/Effect Monster Rarity: Ultra Rare Attack: 1900 Defense: 0 2 Level 4 monsters Once per chain, during your Main Phase or your opponent's Battle Phase, if your opponent has more total cards in their hand and field than you do (Quick Effect): You can detach 1 material from this card; destroy all other cards on the field, also your opponent takes no further damage this turn.