Nightmare Wheel (SDMA-EN033) [Structure Deck: Marik]

Select 1 monster on your opponent's side of the field. As long as this card remains face-up on the field, the selected monster cannot attack or change its battle position. During each of your Standby Phases, this card inflicts 500 points of damage to your opponent's Life Points. When the selected monster is removed from the field, destroy this card.