Spell #40499 (possibly named "Simon Game Switched On Enable Off Switch") doesn't exist. It may have been removed from the game.
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Simon Game, switched ON, enable Off switch - Live
Simon Game, switched ON, enable Off switch - PTR
Simon Game, switched ON, enable Off switch - PTR 2
Simon Game, switched ON, enable Off switch - Beta
Simon Game, switched ON, enable Off switch - Burning Crusade
Simon Game, switched ON, enable Off switch - Wrath of the Lich King
Simon Game, switched ON, enable Off switch - Cataclysm