Number C92: Heart-eartH Chaos Dragon (LVAL-EN050) [Legacy of the Valiant]

4 Level 10 monsters // Cannot be destroyed by battle. When a monster you control inflicts battle damage to your opponent: You gain Life Points equal to the damage they took. If this card has "Number 92: Heart-eartH Dragon" as an Xyz Material, it gains this effect. // * Once per turn: You can detach 1 Xyz Material from this card; negate the effects of all face-up cards your opponent currently controls, until the end of this turn. This activation and effect cannot be negated.