is there another good way to summon "gravekeeper's vassal" and "Serket" in the same turn? Are there cards to special summon "gravekeeper's vassal" (which is level 3 and has less than 1000 atk) or allow you to summon 2 monsters a turn?
usually on the second to last turn, i would tribute summon serket, and if necessary, special summon BEUD only when heavy knight of the flames is NOT present cuz that mofo can banish your BEUD, or Zoma (you will take beud atk damage). After summoning BEUD or Serket, usually he would switch all his monsters to defense.
But prior to this, you need to bait out his 2 Tribute to the doomed, by summoning unnecessary monsters in face-down, like the third pinch hopper, or gokipon. then straight flush his backrow before your last draw or in your last turn.