You can only use the 1st and 3rd effect of this card’s name each once per turn.
(1) If “Golden Sarcophagus of Light” is on the field: You can Special Summon this card from the hand.
(2) This card’s name becomes “Dark Magician” while in the Monster Zone.
(3) If this card is destroyed by card effect and a Level 5 or higher monster is on the field: You can Special Summon this card, then you can Set 1 Spell/Trap directly from your Deck that mentions “Dark Magician”.