Roulette Spider

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 half that monster's ATK. 6: Destroy that opponent's monster.