I've always been a fan of D/D/D, but since I made this deck it became my favorite archetype. I don't bother with meta so there aren't many meta cards you ussualy see in D/D/D decks such as Savage Dragon and Crystal Wing, but you can add them instead of some other monsters.
Use Swirl Slime and Necro Slime to summon D/D/D fusion monsters.
Ghost and Lamia are the main tuners from which one can revive itself and the other one send monsters to GY. Ghost is in my opinion the best way to summon Bright Armageddon.
Necrofear can return banished monsters to GY and easly destroy cards if you have face up spells or traps (good thing this deck uses a lot of pendulums, continues spells and traps).
Gates lets you search needed combo piece, Swamp King is a great fusion spell, Eternal Darkness protects from targeting and tributing (take that Kaiju!) and Witch is a combination of card destruction and ATK buff.
Combine effects of Genghis, Alexander and Ragnarok to revive monsters. D'Arc turns Dark Contract LP price into bonus LP. Siegfried is great for negating any face up spell or trap.
If you get the right set up you can easly summon all 3 Super Doom Kings without any problem
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