The White Stone of Ancients [MP17-EN013] Ultra Rare Limited Set: Battles of Legend: Light's

Set: Battles of Legend: Light's Revenge Card type: Effect Monster Rarity: Secret Rare Attack: 0 Defense: 0 If you control no monsters

When your opponent Normal or Special Summons exactly 1 monster (and no other monsters are Summoned) while this monster is on the field: You can make that monster lose ATK equal to its Level x 200 (until the end of this turn)

This card gains 1000 ATK for each monster your opponent controls

You can only use this effect of "Boot Sector Launch" once per turn

if it was any of these

The White Stone of Ancients [MP17-EN013] Ultra Rare Limited Set: Battles of Legend: Light'sSet: 2017 Mega Tins Mega Pack Card type: Tuner Effect Monster Rarity: Ultra Rare Attack: 600 Defense: 500 Once per turn, during the End Phase, if this card is in the Graveyard because it was sent there this turn: You can Special Summon 1 "Blue Eyes" monster from your Deck. You can banish this card from your Graveyard, then target 1 "Blue Eyes" monster in your Graveyard; add it to your hand. You can only use this effect of "The White Stone of Ancients"