Goat format ruling
Deck Devastation Virus
Card effect (current official text)Tribute 1 DARK monster with 2000 or more ATK; look at your opponent's hand, all monsters they control, and all cards they draw until the end of their 3rd turn after this card's activation, and destroy all those monsters with 1500 or less ATK.
Rulings
- If Night Assailant in your hand is destroyed by the effect of Deck Devastation Virus, its effect will activate.
- Monsters with ? for ATK are treated as having an ATK of zero for this effect, while they are in the hand or face-down.
- The turn that Deck Devastation Virus is activated counts as the first turn. If you activate Deck Devastation Virus during your own turn, the first turn lasts until the end of your opponent’s next turn.
- You also check face-down monsters on the field for Deck Devastation Virus. If Maju Garzett is face-down on the field, its ATK is treated as zero so it will be destroyed.
- You only check the cards on the field and in the hand when Deck Devastation Virus is resolved. Only cards drawn are checked until the end of the third End Phase.
- If you use Change of Heart to take control of your opponent's Magicial Scientist during the turns after Deck Devastation Virus has resolved, it will not be destroyed. If you then use its effect to Special Summon Thousand-Eyes Restrict, it will also not be destroyed.
- You can Tribute a face-down DARK monster with 2000 ATK for the cost of this card.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Goat forum — sourced change requests get reviewed.