Chaos Emperor Dragon - Envoy of the End (TLM-ENSE2) [The Lost Millennium]

Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) by banishing 1 LIGHT and 1 DARK monster from your Graveyard. You can pay 1000 Life Points; send all cards in both players' hands and on the field to the Graveyard, then inflict 300 damage to your opponent for each card sent to the Graveyard by this effect.