You can only use the (1)st and (2)nd effect of this card’s name each once per turn.
(1) If a monster(s) Special Summoned from the Extra Deck is destroyed by card effect: You can target 1 of them; each player takes damage equal to half the ATK it had on the field.
(2) When your DARK Synchro Monster Special Summoned from the Extra Deck is targeted for an attack: You can target 1 card on the field; destroy it.