Denko Sekka [NECH-EN041] Ultra Rare Pendulum/Normal Monster Your Graveyard is unaffected by

Your Graveyard is unaffected by "Necrovalley"

If you Special Summon a monster(s) while you control this card: All monsters your opponent currently controls lose 600 ATK and DEF

If this card is Tributed: Special Summon 1 Dragon monster from your hand or Deck

If this face-up Synchro Summoned card is destroyed by battle

depending on the numer of heads

Denko Sekka [NECH-EN041] Ultra Rare Pendulum/Normal Monster Your Graveyard is unaffected bySet: The New Challengers Card type: Effect Monster Rarity: Ultra Rare Attack: 1700 Defense: 1000 Cannot be Special Summoned. While you control no Set Spell Trap Cards, neither player can Set Spell Trap Cards nor activate Spell Trap Cards that are Set on the field.