During the Main Phase (Quick Effect): You can discard this card; Special Summon 1 Fiend monster from your hand, then destroy 1 card you control. If a card(s) on the field is destroyed by card effect (except the effect of "Unchained Oni of Shara") or by battle, while this card is in your GY: You can add this card to your hand or Special Summon it, but place it on the bottom of the Deck when it leaves the field. You can only use each effect of "Unchained Oni of Shara" once per turn.
