Vanity Majesty's Fiend Monarch Brothers

A full Fiend deck taking advantage of Solidarity atk booast, all the while having great draw power via a full monarch consistent protection as Majesty of Vanity lock out your opponent.

Utilizing the Archfiend engine Beast of Talwar is not just a great opening special summon, he protects himself too.

The Highness Archfiend also a great starter allowing you to grab Eccentric or Royal Archfiend.

Royal Archfiend is exact monarch stats with great synergy for all Monarch spells. His discard and banish effects assist too, the extra normal summon helps alot too.

Eccentric is great for whatever you need her to be either backrow or monster removal.

Spirit Illusion works great when equiped to Majesty with the additional tokens having the same stats and getting further powered with solidarity.

Seal of Oricahlcous works awesome as most of the monsters are 2400 atk so a lock becomes live if all your monsters the same attack.

Extra Deck is all Fiends aswell too, if needed for situations. Aeriel Eater can join the field off the tokens and fusion via the equip spell Spirir Illusion. We do not rely on the extra deck for any of our win conditions or boss monster, hence the draw power from Pot of Extravagence. Careful as pantheism plays not allowed in that turn where we use Pot. We make that decission at the start of Main Phase 1 depending on what else is in your hand.

Side deck all the best continous stun traps that can slow us down but can totally shut down certain match ups, but most of them being a 1 of makes it less reliable.

Royal decree to stop trap based decks, Chaos Hunter is great to stop banish based decks and she still does not mess up Solidarity and same with Lava Golem being Fiend.

If your opponent runs field cards then set rotation into Magic Mid-Breaker field is a great way to lock them out of using there own fields. Chicken Game works well if your opponent plays higher aggressive or alternate win condition decks.