If you control a monster that is not a 'Burning Abyss' monster, destroy this card. Cannot be used as a Synchro Material, except for the Synchro Summon of a 'Burning Abyss' Synchro Monster. If you control no Spell/Trap Cards: You can Special Summon this card from your hand. You can only use this effect of 'Rubic, Malebranche of the Burning Abyss' once per turn.