Arcana Triumph Joker (KICO-EN001) [King's Court]

If this card is in your hand or GY: You can send 1 "Queen's Knight", "King's Knight", and "Jack's Knight" from your hand and/or face-up Monster Zone to the GY; Special Summon this card. This card gains 500 ATK x the combined number of cards in both players' hands. You can discard 1 card; destroy all face-up cards your opponent controls with the same type (Monster, Spell, or Trap) as the discarded card.