Galaxy Satellite Dragon - Maze of the Master (MZTM)

2 Dragon monsters
During the Battle Phase (Quick Effect): You can banish this card from your field or GY, then target 1 "Number" Xyz Monster you control whose original Attribute/Type are LIGHT/Dragon; until the end of the Battle Phase, its ATK becomes equal to the value of the "Number" in its name x 100, also any battle damage your opponent takes is halved. During your opponent's End Phase: You can choose 1 card from your Deck and place it on top of your Deck. You can only use each effect of "Galaxy Satellite Dragon" once per turn.