Divine Scorpion Beast of Serket - Maze of the Master (MZTM)

1 "Serket" monster + 1 monster with 2500 or less ATK
If this card is Special Summoned, or at the start of the Damage Step if this card battles an opponent's monster: You can target 1 face-up monster your opponent controls or in their GY; banish it, and if you do, this card gains ATK equal to half the banished monster's original ATK. You can only use this effect of "Divine Scorpion Beast of Serket" once per turn. Can make a second attack during each Battle Phase, while a Level 10 or higher monster is banished.