Forum:Chaos emperor dragon's effect

I have an original Chaos Emperor Dragon Envoy of the End in my deck. When me and my friend dueled we won't agree on each other about it's effect. It says send all cards on the field and on both players hand to the graveyard and inflict damage to the opponent equal to the number of cards sent to the graveyard x300. I told him that it does not include itself because it is it's own effect. But he told me that it includes itself being sent to the graveyard because it doesn't say anything on the card (except this card). So which is which?