Mimighoul is an Flip Effect-based archetype that debuted in The Infinite Forbidden. Their primary gimmick is that most of the monsters can be given to your opponent face-down and have detrimental Flip effects. 

Don't Open That...!

Mimighoul's primary disruption is Mimighoul Dragon, a Flip monster that destroys all face-up non-Mimighoul monsters you control - or in most cases, your opponent, if Dragon has been given to them. The two other Mimighoul Flip effect monsters have useful but less powerful effects. Mimighoul Archfiend lets the opponent draw a card, and Mimighoul Cerberus banishes the top three cards of its owner's Deck, then gifts the opponent a monster that was found there. 

There is a hidden benefit in "gifting" the Mimighouls to the opponent. Going first, it prevents the opponent from playing cards that require an open board. This disrupts Evenly Matched, Infinite Impermanence, Lightning Storm, and a multitude of starters. 

Thankfully, Mimighoul isn't the same type of slow Fip Effect of the past! Mimighoul Master is the archetypical "on-summon searcher" as well as its primary disruption piece. Master's quick effect allows you to flip a Face-Down monster Face-Up, triggering a detrimental effect on the dime! Similarly, Mimighoul Dungeon is the ever-present searching field spell, but it searches once per turn, not just on activation! But that's not the only effect it has - this is a dungeon, after all. Mimighoul Dungeon prevents players that control Face-Down monsters from attacking with monsters that were Special Summoned this turn. And finally, Dungeon gives Mimighoul monsters that haven't been Normal or Special Summoned during the turn a boost to their Attack equal to their Defense. That means Flip Summoned Mimighouls are immediately beefed up! 

Mimighoul Maker is unique in that it sets two Flip monsters from your deck to either side of the field - and they don't have to be Mimighoul monsters, either! This can be used to find Guard Dog to lock the opponent out of Special Summons for the turn, or giving the opponent Fire Sorcerer to remove cards from their hand. Speaking of which...

Too Stunned to Speak?

Summoning Curse is a unique floodgate card that punishes players for Special Summoning. That is the intended function for Summoning Curse, anyways! The way Summoning Curse is worded, when a Mimighoul monster is Special Summoned to the opponent's side of the field, regardless or not of whether that monster is theirs, the opponent banishes a card from their hand. This is in addition to being a floodgate, so the opponent is on a tight leash if they can't handle both the stun Flip effects of Mimighoul monsters and the hand getting dwindled by their own action.

In the Abyss of the Dungeon... 

(+)Giant Mimighoul

In the upcoming set Rage of the Abyss, Mimighoul receive several new Main and Extra Deck monsters. This includes one boss XYZ monster in the form of (-)Giant Mimighoul, and a support XYZ monster in (-)Mimighoul Throne! Giant Mimighoul searches for any Mimighoul card on summon, converting any two level one monsters into Mimighoul Maker - and thus making Fire Sorcerer hand loops even more consistent. Furthermore, Giant Mimighoul removes threats equal to the amount of face-down monsters the opponent controls and burns them for 1000 per each card, giving Mimighouls a reactive way to respond to established boards that doesn't include a multi-card combo with Mimighoul Dragon. Finally, Giant Mimighoul allows your monsters to attack directly when the opponent controls a face-down monster. This gives Mimighoul Dungeon some credibility as an offensive threat, combined with Giant's burn effect. 

As a side note, Giant Mimighoul's burn gives the deck a win condition in time - while it's perhaps crass to consider these things, it is an unfortunate reality and a real boon.

As for Mimighoul Throne, it requires the same material as Giant Mimighoul, two level one monsters. Unlike Giant Mimighoul, Throne narrowly searches and summons Mimighoul Master, but from the deck or the Graveyard. Furthermore, Throne's quick effect lets it equip itself to Master, then bounces cards on the field up to the number of materials it had. This could be one or two, depending on whether you needed to search for the king, but regardless, this bounce is non-targeting. As seen from cards like Madolche Queen Tiaramisu, this is one of the most effective forms of removal, and an incredible threat as a quick effect. 

 An Adventurer's Worst Nightmare Realized!

(+)Mimighoul Slime

Mimighoul is a TCG-exclusive archetype, which means it starts off with a rather small card pool. Thus, the introduction of (-)Mimighoul Fairy, (-)Mimighoul Slime, and (-)Mimighoul Armor is a welcome one! Mimighoul Fairy prevents the effects of monsters Special Summoned from the hand, which will absolutely destroy certain match-ups. Armor isn't the best, but is another name and adds a layer of protection to a board of Throne + Master. Slime is a standout here, as it sets up for either Giant Mimighoul or Mimighoul Throne! With these additions, Mimighoul has all the makings of a solid deck: extenders, disruption, and removal.

Charmed to Meet You

Mimighoul Charm  is the final card of note from Rage of the Abyss, and like the other Mimighoul cards, it's quite unique! Charm lets you swipe monsters from the opponent's Extra Deck when they flip a Mimighoul twice per turn, but they cannot use their effects on the turn that they're summoned. This last restriction won't matter a lot of the time if you're going first, especially if you manage to nab a monster with a negation effect! While receiving random cards isn't the most appealing effect, Mimighoul Charm's biggest appeal is taking away the opponent's options and combo links.

Hidden Treasure Revealed

With the advent of the latest Mimighoul support, the deck seems to have all the tools that are necessary to fight with the best. While Flip effects are typically slow, Mimighoul makes up for it with bombastic field wipes, hand disruption, and field flooding capabilities. Do you all think Mimighoul can keep up with the new support, or will its inherent slowness and need to find ways to flip their monsters too much to ask for?