Number C104: Umbral Horror Masquerade Victory (BETB-EN043) - Beyond the Brave 1st Edition

4 Level 5 monsters
Once per turn (Quick Effect): You can detach 1 material from this card, then target 1 card your opponent controls; destroy it. If this card battles an opponent's monster, during damage calculation: This card's ATK/DEF become equal to that opponent's monster's ATK or DEF (whichever is higher) +100, during that damage calculation only. If this card destroys a monster by battle: Send 1 random card from your opponent's hand to the GY, and if you do, halve your opponent's LP.