Card Rules: Rulings powered by The Netrep API. If you have only 'Kuriboh' in your hand , and no Spell or Trap Cards on the field and your 'Theban Nightmare' battles with a card that has higher ATK/DEF and you discard 'Kuriboh' the ATK of 'Theban Nightmare' is increased by 1500 AFTER damage calculation (but 'Theban Nightmare' is still destroyed by damage calculation unless an effect like 'Waboku' had been activated previously during the turn). [Re: Embodiment of Apophis] If you control 'Theban Nightmare' and 'Embodiment of Apophis' you control a Trap Card so the effect of 'Theban Nightmare' cannot be applied. Passcode: 51838385 Set: Dark Revelations 2 ATK/DEF: 1500/500 Card Number: DR2-EN176 Monster Type: Fiend Rarity: Rare Attribute: Light Card Text: While there are no cards in the hand and in the Spell and Trap Card Zones of this card's controller increase the ATK of this card by 1500 points. Level: 4 Card Type: Effect Monster Name: Theban Nightmare Edition: Unlimited