You can only use the 2nd effect of this card’s name once per turn.
(1) This card’s name becomes “Red Dragon Archfiend” while face-up on the field or in the GY.
(2) If this card is sent from the Monster Zone to the GY: You can Special Summon 1 “Red Dragon Archfiend” from your Extra Deck (this is treated as a Synchro Summon), then, if this card was sent to the GY as Synchro Material for a DARK Dragon Synchro Monster, you can destroy all opponent’s Attack Position monsters.