This is a case of quick, small attacks to enable blues predominant forces to come into play
(1) During the Main Phase: Fusion Summon 1 Psychic Fusion Monster from your Extra Deck, by banishing Psychic monsters from your field and/or GY as material
While more thematically matching crossovers like Final Fantasy tend to get full-size sets, secret lair crossovers provide a space for something smaller and often a bit more light-hearted, like Hatsune Miku or Monty Python
This last is because colors on the cards are printed in reverse alphabetical order, from White, blUe, Black, Red, and Green (Blue is U because B is Black and L is Land in design files)
Weve also got plenty of Rogues, including Grenzo, Havoc RaiserGrenzo, Havoc Raiser for some Goading and card advantage, Humble DefectorHumble Defector and Morbid OpportunistMorbid Opportunist for card draw, Kamber, the PlundererKamber, the Plunderer and Laurine, the DiversionLaurine, the Diversion work together to make Blood tokens and Goad creatures, and Rankle, Master of PranksRankle, Master of Pranks for multiple benefits