Wikia

Original	First Errata
[ Magic Card ]	[ Spell Card ]
The monster equipped with this card cannot attack. In addition, the player controlling the equipped monster must take damage of 500 Life Points during each of your Standby Phases.	The monster equipped with this card cannot attack. The controller of the equipped monster takes 500 points of damage during each of your Standby Phases.
LON-019 Labyrinth of Nightmare Added by Dlamash	DB1-EN222 Dark Beginning 1 Added by Narchibald84

Card Errata:Mask of the Accursed