Your search for "Earthquake AST-043" revealed the following:
Earthquake - AST-043 - Common - 1st Edition from Ancient Sanctuary 1st Edition, available at 401 Games Canada. Rarity: Common Card Text:All face-up monsters on the field are changed to Defense Position.
Earthquake - AST-043 - Common - Unlimited from Ancient Sanctuary Unlimited, available at 401 Games Canada. Rarity: Common Card Text:All face-up monsters on the field are changed to Defense Position.