Zombie World Deck
Also known as The Army Of Darkness, this Deck type, as the name suggests, is based around the Field Spell, "Zombie World". This Deck is very versatile, as almost any of the Zombie staples can be splashed in. This Deck can be brutally effective against many other Decks, as "Zombie World", as well as changing all your opponents monsters on the field and in the Graveyard into Zombies, also stops your opponent from Tribute Summoning anything other than a Zombie monster. This negatively affects many commonly used Decks, such as Bujin, Plants, and Brotherhood of the Fire Fist. Many cards are designed specifically to work with the Field Spell, such as "Doomkaiser Dragon" or "Trap of the Imperial Tomb" or even "Sacred Crane" or "Molten Zombie" for draw power. Other cards have indirect merit, such as "Getsu Fuhma", "Marionette Mite", or even "Tutan Mask" when used on your opponents to stop pesky Spells or Traps. Another good card to try is "Beelze of the Diabolic Dragons", using "Plaguespreader Zombie" you can go into any level 6 Synchro monster, then bring Plaguespreader back using its effect, then Synchro Summon again for "Beelze".
This Deck has many Zombie staples such as "Pyramid Turtle", "Zombie Master", "Goblin Zombie", or "Plaguespreader Zombie" if you want to Synchro Summon. The key player in this Deck is without a doubt "Il Blud". "Kasha" can also be included, but remember that monsters treated as Zombies by the effect of "Zombie World" that are returned to the Deck are not counted towards its ATK. "Immortal Ruler" can also be used to recycle "Zombie World". Another excellent card to use is "Red-Eyes Zombie Dragon", which allows you to Summon any Zombie which it destroys by battle. "Pyramid Turtle" and "The Black Stone of Legend" can be used to search "Red-Eyes Zombie Dragon".
"Night Dragolich", while not a Zombie monster, can be used to support the Deck since the majority of its monsters will be Special Summoned from the Graveyard, if the likes of "Doomkaiser Dragon" are not being used (unless they are revived after being destroyed), which may not be the case for the opponent. "Curse of Dragonfire" can also be used with this Deck to not only destroy opposing Field Spells, but also Fusion Summon "Dragonecro Nethersoul Dragon" while "Zombie World" is on the field.