A deck I made on my own based around the monster Maju.
The Great Maju Garzett.
Strengths: Can pretty much play around any situation as long as your opponent doesnt have a full board of negates.
Weakness: Weak going first unless you can get Yubel on the field turn 1 or turn 2 summoning from hand during battle phase to stop battle dmg calc. Dogmatika locks out fusion armament so make sure you use that before using Dogmatika cards if your going for tribute summon The Great Maju Garzett.
Synergies:
Maju - Great Maju Garzett gains double the attack of the original attack of the 1 tributed monster you use. I pair it well with fusion armament to summon blue eyes ultimate dragon as tribute fodder so that its attack can go up to 9k leaving open an option to otk. You can also use spell card soul exchange to tribute opponent monsters as tribute material for its attack. Alot of players like summoning high attack boss monsters. I usually bait out all their negates and responses and go in for the ol' soul exchange and swing for game.
Dogmatika - Very good at dismantling your opponents board by sending out the right extra deck monsters to get rid of their backrow or monsters. The extra deck monsters have multiple way of activating their effects, whether it be sent to the GY or by banishing itself from the GY if you want to bait out a response like garura to bait out their ash before searching for cards if you open with dogmatika. It locks you out of fusion armament if used before it. However if you use it after you can special summon ecclessia from hand now 3 headed-blue eyes is on the field so you can save your tribute summon for Great Maju Garzett.
Yubel - Stall long enough to get the cards on the field you need or if your opponent has no out to it, its a free win. You can also bait out their maxx c and hold yubel in hand for when they attack the next turn so they dont draw cards off you.
Nightmare Throne - Can be used to add Yubel or any other fiend with 0 attack including Great Maju Garzett/Emperor Maju Garzett if you really need it, you might want to bait out your opponents responses and use this towards the end of your combo.
Spell Card (Soul Exchange) - If used right can otk your opponent by tributing 3 headed blue eyes from fusion armament summon giving him 9k attack or tributing your opponents monsters with yubel or maju then activating life hack on two of your monsters if you and your opponent both at 8k, you can swing for game if you can attack directly after getting rid of all their monsters
Life Hack - Can be used twice on your turn to increase attack of two monsters on the field, 1 equal to your LP and one equal to your opponent's LP but half dmg. Can be used to otk your opponent if you dont have Great Maju Garzett. If you can get two bodies on the field, whether it be maximus and ecclessia by adding them with nadir servant or yubel and squirter by adding it with nightmare throne for two bodies, or any combination you can come up with and attack directly. Both monsters have to be 8k attack in order to otk however it does succeed in lower your opponents LP enough for you to land the finishing blow next turn. Can also be used on your opponents turn to lower their monsters attack if their on low LP or increase ur monsters attack to your opponent's LP during the battle phase. Good Synergy with Yubel if they have to attack it or to stop the enemy from otking potentially.
Conclusion: Fun deck, rarely bricks and if you do 9/10 times you can stop your opponent from doing too much and it gives you time to play. Plays around nib very well as your'e at most summoning 3 monsters most of the time, 4 max.
Tips:
#1 - Not all extra deck monsters destroy; some send to the GY instead like Evil Twin Sunny. It requires the one evil twin monster in the deck not to be in GY or banished to work when you activate the effect in GY. This to get around monsters that cannot be destroyed or targetted.
#2 - Packbit activates when you send it, you discard one card and target a monster on the field and place it as a trap/spell, very good for getting around monsters that cannot be destroyed or have annoying effects that stop you from playing or monsters that activate a bunch of effects in GY.
#3 - Fossil Warrior Skull Knight and Fossil Machine Skull Wagon both can be activated after sending it to the GY. Which can be used to play around doom king and zombie world or anything like that.
#4 - Wind Pegasus can be used anytime one of your monsters is destroyed so you can use it during your turn if your opponent destroys your monster by card effect or destroy your Maximus/Ecclessia during their battle phase if they have an annoying monster that you need to shuffle into the deck
#5 - The other two Maju's, very niche circumstances. Maju Garzett cannot be added with Nightmare Throne unlike Emperor Maju Garzett. Emperor Maju Garzett is to out monsters that cannot be destroyed by battle and is in defense mode to inflict piercing. Maju Garzett can be used for Soul Exchange to tribute your opponents monsters to otk, its not searchable but comes in handy at times if you have no other out to your opponent's mosnter.