Considering the deck's human count is so high, there are several payoff cards in the deck as well
At first they can start exploiting weaknesses in Defense Position monsters, then it gets so dark your opponent can't even spot them (so they attack you directly instead), then you start pickpocketing their stuff, and then you can just directly finish off your opponent
In fact, the Scramble part of Scramble Switch seems like a throwback to Scramble Energy, another card that caused games to go off in wildly different directions
By sending 3 cards of the same type from the hand or GY, "Fallen Paradise of the Sacred Beasts can Special Summon "Sacred Beast" monsters and also allows the player to draw 2 cards to make up for the loss of card advantage
Ulamog, the Defiler How big would you like your creature to be
I could keep it at 45, and either run a copy of something like Mezuki, or run 2 Co-Forbidden cards which would likely be of either Psy-Framelord Omega, Card Destruction, Dark Hole, Pot of Extravagance, or one of the Solemns