Doom Virus Dragon (Green) [DLCS-EN055] Ultra Rare Tuner/Effect Monster you can reveal it to

you can reveal it to Special Summon it

Set: Spell Ruler Card type: Field Spell Rarity: Common Increase the ATK of all WATER monsters by 500 points and decrease their DEF by 400 points

Set: Turbo Pack: Booster Seven Card type: Synchro/Effect Monster Rarity: Rare Attack: 2400 Defense: 1200 1 Tuner + 1 or more non-Tuner monsters When this card destroys an opponent's monster by battle and sends it to the Graveyard: Inflict 300 damage to your opponent for each card in your opponent's hand

then you can return a Field Spell Card(s) on the field to the hand

Doom Virus Dragon (Green) [DLCS-EN055] Ultra Rare Tuner/Effect Monster you can reveal it toSet: Dragons of Legend: The Complete Series Card type: Fusion Effect Monster Rarity: Ultra Rare Attack: 1900 Defense: 1500 Must be Special Summoned with "The Fang of Critias", using "Crush Card Virus". If this card is Special Summoned: Look at your opponent's hand, all monsters they control, and all cards they draw until the end of their 3rd turn after this effect's activation, and destroy all those monsters with 1500 or more ATK.