Calcab, Malebranche of the Burning Abyss

If you control a monster that is not a "Burning Abyss" monster, destroy this card. You can only use 1 of the following effects of "Calcab, Malebranche of the Burning Abyss" per turn, and only once that turn. ? If you control no Spell/Trap Cards: You can Special Summon this card from your hand. ? If this card is sent to the Graveyard: You can target 1 Set Spell/Trap Card on the field; return that target to the hand.