Idaten the Conqueror Star

2 Level 5 or higher Warrior monstersIf this card is Fusion Summoned: You can add 1 Level 5 Warrior monster from your Deck to your hand. You can only use this effect of "Idaten the Conqueror Star" once per turn. Once per turn: You can discard any number of cards; this card gains 200 ATK for each card discarded. Once per battle, during damage calculation, if this card battles an opponent's monster with an equal or lower Level (Quick Effect): You can make that opponent's monster's ATK 0 during that damage calculation only.