When an opponent's monster declares an attack: Roll a six-sided die and apply the result.
1: Halve your LP.
2: Make that attack a direct attack.
3: Choose 1 monster you control, change the attack target to it, and perform damage calculation.
4: Choose 1 other monster your opponent controls, change the attack target to it, and perform damage calculation.
5: Negate the attack, and if you do, inflict damage to your opponent equal to that monster's ATK.
6: Destroy that opponent's monster.