Edison format ruling
Exodia Necross
Card effect (current official text)Cannot be Normal Summoned/Set. Must be Special Summoned with "Contract with Exodia", and cannot be Special Summoned by other ways. Cannot be destroyed by battle or Spell/Trap effect. Once per turn, during your Standby Phase: This card gains 500 ATK. Destroy this card unless all 5 of these cards are in your Graveyard - "Exodia the Forbidden One", "Right Arm of the Forbidden One", "Left Arm of the Forbidden One", "Right Leg of the Forbidden One" and "Left Leg of the Forbidden One".
Rulings
- Exodia Necross cannot be Normal Summoned or Set, and cannot be Special Summoned EXCEPT by the effect of Contract with Exodia. So Exodia Necross cannot be Special Summoned with Monster Reborn, etc., even if Special Summoned properly first.
- Players can activate Spell & Trap Card effects that destroy monsters, but Exodia Necross will not be destroyed by them.
- If your opponent takes control of your Exodia Necross and does not have all 5 pieces of Exodia in his/her GY, Exodia Necross is destroyed if face-up.
- While Skill Drain is active, Exodia Necross is not destroyed if Exodia pieces are removed from the GY, but it will be destroyed if the effect of Skill Drain disappears.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.