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.