Shura the Combat Star (BLRR-EN040) - Battles of Legend: Relentless Revenge 1st Edition

"Idaten the Conqueror Star" + 1 Level 5 or higher Warrior-Type monster
Once per turn, during the Battle Phase (Quick Effect): You can change the ATK of all face-up monsters your opponent controls to 0. Once per battle, if two monsters battle, during damage calculation (Quick Effect): You can make each of those battling monsters gain ATK equal to their own Level x 200, during that damage calculation only. If this Fusion Summoned card you control is destroyed by an opponent's card (by battle or card effect) and sent to your GY: You can Special Summon 1 "Idaten the Conqueror Star" from your Extra Deck. (This is treated as a Fusion Summon.)