If this card on the field is sent to the Graveyard as a Synchro Material: You can add 1 'Shiranui' card from your Deck to your hand, except 'Swordsmith of Shiranui'. You can only use this effect of 'Swordsmith of Shiranui' once per turn. If this card is banished: You can activate this effect; for the rest of this turn, Zombie-Type monsters you control cannot be destroyed by battle.