If Black-Red madness and other variation of the deck represent most of my success in the format, I also like mainly 2 other decks, Blue-Green tokens, and Blue-Red delirium control
Once per turn, if a Level 8 or higher Fish Synchro Monster(s) is Special Summoned from your GY, even during the Damage Step: You can destroy all monsters your opponent controls
Legendary Creature - Wizard Angel Maarika, Brutal Gladiator Maarika, Brutal Gladiator must be blocked if able
It also reliably provides additional cards whenever the chosen creature type is cast
We'll also offer some good buying practices so you can focus on dominating your opponents with Dark Paladin and Blue Eyes White Dragon (instead of wondering why your Black Cows Magishun and Cyan Face Blue Dinosaur got your deck banned from local tournaments)
At the same time, however, the synergies that have begun to emerge can easily dominate a game, making it well worth building a deck around them if possible