Plague Rats [Collectors' Edition] XY191 this card gains ATK equal

this card gains ATK equal to half the difference between your LP and your opponent's

this card destroyed instead

Set: Ignition Assault Card type: Synchro/Effect Monster Rarity: Super Rare Attack: 2300 Defense: 1500 1 Tuner + 1+ non-Tuner monsters During your Main Phase: You can destroy Spells/Traps your opponent controls

As easy to stop as it is to comprehend

Plague Rats [Collectors' Edition] XY191 this card gains ATK equalSet: Collectors' Edition Type: Creature Rat Rarity: Common Cost: {2}{B} Plague Rats's power and toughness are each equal to the number of creatures named Plague Rats on the battlefield. "Should you a Rat to madness tease Why ev'n a Rat may plague you" Samuel Coleridge, "Recantation"