Evilswarm Exciton Knight [RA04-EN212] Quarter Century Secret Rare

2 Level 4 monstersOnce 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 for the rest of this turn, your opponent takes no damage.