Ride into the Danger! World

Dark World/Danger! deck for Domain Format, a casual multiplayer free-for-all format inspired by MTG Commander format.

Using Tour Guide From the Underworld as the Deck Master gives me access to DARK or Fiend monsters.

The main idea is use Tour Guide From the Underworld as a toolbox to get an easy search, recycle a monster from the GY or get a Dark World monster into the field for Grapha, Dragon Lord of Dark World or Reign-Beaux, Overking of Dark World.

Muckraker From the Underworld is an amazing card, it gives destruction protection and allows us to target a Fiend monster in our GY, then discard a card to special summon it.

 Tour Guide From the Underworld can special summon this cards from your Deck

• Sangan: Go for a Link 2 monster to search a monster with 1500 or less ATK from your deck.
• Tour Bus From the Underworld: Go for a Rank 3 Xyz and detach this card to recycle a monster in your GY.
• Doomdog Octhros: Go for a Link 2 monster to search a Lv 8 Fiend monster from your deck.
• Fiendish Rhino Warrior: Go for a Link 2 or a Rank 3 Xyz and detach this card to send a Fiend monster from your deck to your GY.
• Edge Imp Sabres: Easy I:P Masquerena field setup. Also you can go for any Link 2 -> Link 3 play with his GY effect.
• Broww, Huntsman of Dark World: Bounce it to special summon Grapha, Dragon Lord of Dark World or Reign-Beaux, Overking of Dark World.
• Dark Spirit of Banishment: Go for a Link 2, so you can keep recycling this card effect to redirect an attack and special summon a Lv 8 Fiend monster from your GY.
• Dark Spirit of Malice: Go for a Link 2, so you can keep recycling this card effect to special summon a Lv 8 Fiend monster from your GY.

Notable techs:

• Underworld Goddess of the Closed World: Link summon her using I:P Masquerena to get rid of a problematic monster.
• Zalamander Catalyzer: This card is a free Dark World or Danger! discard trigger and puts a body on the field for a Link 2 or Rank 4 Xyz play.
• Forced Requisition: Each time you discard a card you get rid of your opponent's hand.
• Curse Necrofear: This card recycles banished Fiend monsters, also if is destroyed by an opponent's card, you can special summon this card from your graveyard and destroy cards up to the number of face-up spells or traps.
• Diabolica the Draconique General: This card helps with Rank 8 Xyz plays and can recycle a Fiend monster in your GY.
• The Dark - Hex-Sealed Fusion: Added after Clorless, Chaos King of Dark World revelation. Can substitute any of our named fusion materials.

Cards for further testing:

• Lil-la Rap: Works like Card of Safe Return but for Burn/Gain LP.
• Cards to gain LP like Cauldron of the Old Man or Child's Play.
• Appropriate: Tax the draw from Dragged Down into the Grave and Dark World Dealings.
• Necroface: Full banish reset.
• Cards to special summon from your graveyard like Monster Reborn, Premature Burial or Soul Charge.

We play on the Domain Format discord often. Anyone can come ask questions or learn the format to build a deck.

Also you can check Yugioh Commander!'s rules video down below.