Maze of the Master

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.

Divine Scorpion Beast of Serket

Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) by banishing 1 Level 10 or higher monster from your hand or Deck, while you control "Temple of the Kings". You can only Special Summon "Merciless Scorpion of Serket" once per turn this way. Once per turn, during your Main Phase: You can add 1 "Temple of the Kings", or 1 Spell that mentions it, from your Deck to your hand. At the start of the Damage Step, if this card battles an opponent's monster: You can destroy that opponent's monster, and if you do, this card gains ATK equal to half the destroyed monster's original ATK.