[MVPC] Gandora X, the Dragon of Ruin

When this card is Normal or Special Summoned from the hand: You can destroy as many monsters on the field as possible (other than this card), and if you do, inflict damage to your opponent equal to the highest ATK among those destroyed monsters (your choice, if tied), and if you do that, this card's ATK becomes equal to the damage inflicted to your opponent. Once per turn, during your Standby Phase: Halve your LP.