Erratta.

[quote]Name: Chaos Emissary, Chaos Caller
Level: 4
Attribute: LIGHT
Monster Type(s): Spellcaster
Effect: Once per turn, during your Main Phase, you may discard this card to the graveyard and send one DARK monster from your deck to the graveyard. If you do, this card and the card sent from  the deck to the graveyard can not be moved from the graveyard until the End Phase of that turn.
ATK/DEF: 1400 / 1500[/quote]

In effect starting now. All duels including this card before this point do not have their results changed. 

EDIT: This card is also on the limited list.