Koa'ki Meiru is not a new archetype, having come out in Gaia Genesis originally. However, thanks to the new box Revolution Beginning, this archetype has received major support in the form of Loading... and minor support with the addition of Loading... , Loading... , and Loading... . These combined with past support have made this archetype into a top deck as the meta shifts away from a slower format. The deck revolves primarily around flooding the field with high attack 4 star monsters, negating opponent's backrows, and special summoning Loading... , the deck's main boss. This allows for quick OTK pushes that other decks in the meta must be prepared to handle.
Balance is a popular skill choice for this deck as the monster core tends to be around 8 and the 3 Diamond Cores and 3 Iron Cores round out the spell portion. This allows for 6 traps of your choice to fit the situation and guarantees you will have a play from the start of every game, every time.
Last Gamble :
This is the least used skill type, but it did come 2nd in the DLM Meta Weekly. The goal is to survive until turn 5 and then gain the resources you need to clear the field.
Sealed Tombs :
This skill choice is relatively meta dependent, but is a popular choice for dealing with Vampires and most other meta decks. In the mirror, the skill prevents your opponent from banishing Diamond Core to protect their monsters in the end phase or that turn.
The Tie that Binds :
With Vampires decreasing in popularity, Sealed Tombs has lost a bit of luster as decks like Karakuri rise. The Tie that Binds allows you to OTK with just Urn plus a negate monster. This skill will even allow for OTK through a Loading... ; making it a good choice moving forward.
A less popular choice, however Grit is sometimes used to help ward off an opponent's OTK attempt while you set up your own the following turn. This is the most all or nothing form of the deck.
The bandit skill has recently seen success when paired with several copies of Loading... and Loading... . The goal is to set Scolding early and prevent your opponent from establishing any kind of board, steal a set card the following turn, and then OTK them. For the time being, this skill and Scolding combo bare paying serious attention to. However, timing your use of Scolding is what makes or breaks the deck.
Meta Weekly 53 - 1st Place by Brenduke
Koa'ki Meiru Maximus (2-3x):
Maximus is the boss monster of the deck. His stats are equivalent to Loading... , which puts him at a threshold above the rest of the meta. In addition, he is allowed to destroy and 1 card your opponent controls once per turn, per copy of Maximus on your field. However, to summon him requires banishing an Loading... from your hand. This means you need to choose carefully when to commit your resources to the field as his end phase upkeep can be costly. Lastly, Maximus' endphase cost comes after all other Koa'ki. So you can reveal a monster of the required type to pay their cost and then discard the same monster to pay for Maximus.
Koa'ki Meiru Urnight (2-3x):
Urnight sits at 2000 attack, establishing it as the strongest 4 star monster in our meta. Additionally, by revealing an Loading... , it can special summon any of your other level 4 or lower Koa'ki's from your deck. This allows for fast field flooding.
Koa'ki Meiru Sandman & Wall (1x):
Each of these monsters sits at 1900 attack and can tribute themselves to negate an opponent's trap or spell respectively. Use Loading... to special summon them from the deck and protect your field.
Iron Core of Koa'ki Meiru (2-3x):
This is the fuel of the deck. Iron Core is needed for Koa'ki Meiru Urnight's effect as well as Koa'ki Meiru Maximus' summoning conditions. Additionally, it can be discarded in the endphase to pay their upkeep or recycled to the hand during the draw phase.
Diamond Core of Koa'ki Meiru (3x):
This is the main card that makes the deck go. Diamond core allows you to search any monster in your deck, as well as Iron Core. So, use it to grab the missing piece you need. Additionally, by banishing this card from your graveyard, you will not have to pay the endphase upkeep on any of your monsters. This will also protect them from card effect destruction or battle destruction, allowing you to safely swing in on your opponent in nearly every case. This paired with a Loading... or Loading... and a Loading... can take down nearly any opposing field.
Koa'ki Meiru Ice:
Ice can destroy any special summoned monster your opponent controls. Use it to help clear a field of monsters that can give Maximus difficulty, such as Loading... 's forms. If Loading... is on the field already, normal summoning Ice will force them to Loading... it, allowing Maximus to clean up the board.
Koa'ki Meiru Boulder:
Boulder must be destroyed by battle, but can search Iron Core or a a low level Koa'ki. Slow, but useful against decks that rely primarily on battle destruction such as Heroes, Control, or Karakuri.
Used to revive any Koa'ki monster including Maximus so long as he was summoned properly. However, if you fail to pay their endphase cost, you will pay with your lifepoints. This trap frequently conflicts with Sealed Tombs, and is more of a last resort than anything else.
Koa'ki Meiru Rooklord:
Can be tribute summoned by tributing just 1 Koa'ki. By banishing a Koa'ki from the grave on summon, it can destroy 2 cards your opponent controls. Slow, but a decent tech card vs slower Control decks. Because this monster's upkeep is more difficult than our others, it is used less. This card bears watching more at the meta develops and has its place in a slower meta as a way to provide space on your own board by tributing Loading... d monsters.