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| passcode =
| effect_types = Trigger, Condition, Trigger, Ignition
| lore = [[Flip effect|FLIP]]: You can [[target]] 1 [[Monster Card|monster]] on the [[field]]; change it to [[face-up]] [[Attack Position]] if it is in [[Defense Position]], also change its [[ATK]] to 0. You can only use this [[Card effect |effect]] of "Subterror Behemoth Speleogeist" [[once per turn]].<br />When a face-up monster you [[control]] is flipped [[flip]]ped [[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.
| fr_lore =
| de_lore =
