Evil HERO Dark Gaia

[ Fiend / Fusion / Effect ] 1 Fiend monster + 1 Rock monster Must be Special Summoned with "Dark Fusion". The original ATK of this card becomes the combined original ATK of the materials used for its Fusion Summon. When this card declares an attack: You can change all Defense Position monsters your opponent controls to face-up Attack Position. (Flip effects are not activated at this time.) ATK/ 0 DEF/ 0