The Lord of all Cheese. One of the 13 cards banned in Duel Monsters, it is perhaps the most hated card in the game next to Yata-Garasu (see Yata-lock).

Chaos Emperor Dragon - Envoy of the End
Dragon/Dark/8/3000/2500
This card can only be Special Summoned by removing 1 LIGHT and 1 DARK monster in your Graveyard from play. Pay 1000 of your Life Points to send all cards in both players' hands and on the field to the Graveyard. Inflict 300 points of damage to your opponent's Life Points for each card that is sent to the Graveyard by this effect.

Alongside the priority rule, this card couldn't be stopped without a stupidly situational counter.
"Pay 1000. The field goes BOOM."
by Hino-Kagu-Tsuchi December 17, 2004
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