Voltellurique Subterreur Béhémoth RATE-FR084

FLIP: You can target 1 monster your opponent controls, take control of it until your next End Phase. You can only use this effect of "Subterror Behemoth Speleogeist" once per turn. When a face-up monster you control is flipped face-down, if you control no face-up monsters: you can Special Summon this card from your hand in Defense Position. Once per turn: you can change this card to face-down Defense Position.