All decklists aim to be legal in the modern metagame.
Include: Credit, YDK File, brief-ish reasoning, cool tips, potential alternative options.
At minimum, a Nekroz deck should include;
2-3 Brionac, 3 Unicore, 1 Clausolas, 1 Cycle, and 1-2 Kaleidoscope.
One or two generic Ritual searchers, such as Preparation of Rites or Diviner of the Herald.
A powerful Normal Summon, such as the Dragonmaid, Diviner of the Herald, or Dogmatika engines,
Anti-Special Summon floodgates like Vanity's Ruler or Archlord Kristya are valid alternatives to extension.
Nekroz functions as an anti-Extra Deck supplement to decks that can utilise Unicore well. If you find an engine you're using happens to work under it, you may have just found yourself the perfect partner.
A 60-card list utilising the Adventurer engine, Small World, and a swathe of hand traps to produce some terrifying end-boards. Dogmatika and Adventurer play to Nekroz's core strengths well, and while it doesn't work with Diviner on the same turn, the effects are largely the same. An Illusion of Chaos mini-package is included to allow for further extension alongside the Adventurer engine, discarding Dracoback with Souls to +1 and make a Linkuriboh. Expect to end on an Adventurer, Unicore, White Knight, and Linkuriboh board with good consistency, while having the usual Diviner combos if you don't open the Adventurer engine. Final Sigma and Cupid Pitch are included to work with the latter, acting as a lynchpin in the Floowandereeze matchup.
Small World is the claim to fame for the deck, searching virtually anything the deck has to offer. It's recommended you download the YDK here and input it into the Small World optimiser to better-grasp what you can do. There's no single use for the card, it fixes your hands. Treat it as an extra 3 copies of anything in your deck, you can probably make it work. You can see a preset one using this list here.
The Adventurer engine can be removed for cost-effectiveness - and only cost-effectiveness, it's worse off without the Gryphon negate - but don't add any extra cards unless they're additional Magician's Souls. 50-ish card pile variants of this deck are perfectly fine, just worse than this list. Outside of cost-cutting, the deck here is very tight and replacing cards is very difficult. Make sure that any changes made are done with extreme prejudice.
Designed Pre-Battle of Chaos, drop a Nadir Servant for an Ecclesia.
Can have some ratios dropped to include White Relic of Dogmatika, Dogmatikamacabre, and Pre-Preparation of Rites, but will often go over 40 cards.
Heavily compressed to hit 40 cards, this deck utilises Archlord Kristya to snipe quick, dirty wins, while having the ability to go into a convincing grind game otherwise through Cyber Egg Angel. Aiming to get to Diviner as much as possible, the deck is built around thinning itself for Pot of Prosperity to maximise the chances of pulling it. Don't tribute Benten to search Diviner, as this means summoning Brionac and likely having used its effect to get Nekroz Cycle, wherein the Diviner combos no longer become possible.
Generally, the deck should be looking for any of Dogmatika Maximus, Nadir Servant, or Nekroz of Brionac alongside Diviner of the Herald to confirm a Kristya combo.
Packages involving White Relic of Dogmatika + Dogmatikamacabre and Nekroz of Trishula + Nekroz Mirror are included to make pushing for game and breaking boards more effective. However, they can be removed in favour of hand traps, additional copies of Dogmatika Maximus and Ecclesia, and more. That's 4 spaces, which can be dedicated to the PSY-Frame package, though this can be cloggy.
Archlord Kristya is harder to out than your standard fare, as it puts itself to the top of the deck on destruction, and recurring Artifact Lancea means you can tribute it on the opponent's turn to not only keep them from banishing, but keep it coming back. However, Dogmatika Punishment + PSY-Framelord Omega outs this by shuffling an in-grave Fairy on our end into our deck.
This deck is often played on a budget, in which Diviner of the Heralds is usually replaced with Manju of the Ten-Thousand Hands or Gale Dogra. It's considered to be worse than the Drytron or Dogmatika builds, but remains serviceable. This deck struggles greatly with including hand traps due to how large the Impcantation package can be, which puts a firm cap on its viability.
Impcantation builds usually aim to use Impcantations as tribute for Vanity's Ruler or Archlord Kristya, locking the opponent out of special summoning at all. It tends to lose to any amount of removal, but it's still functional thanks to the support from Unicore. This deck features a heavy Nekroz lineup involving Valkyrus and Areadbhair, which synergise decently with the amount of tribute fodder the Impcantations provide. Ending on Unicore + Kristya is the grand aim which, while not a fancy way to win, is effective against any special summon-heavy deck. However, it's also possible to grind while using Areadbhair and Valkyrus to get significant card advantage; Diviner does not need to be Normal Summoned if using either, as you can tribute it to get Cyber Egg Angel and thus Ritual Sanctuary. With these all in rotation, the deck can be deceptively difficult to crack open.
This deck incorporates Geomathmech Final Sigma, which is a L12 Kaleidoscope target for Valkyrus + Unicore - the ideal way to summon Valkyrus in this build - but it's also capable of summoning it off of Diviner + any spell when using Cupid Pitch. For how to do that, go here. No Cupid Pitch search targets are in the deck, but Djinn Demolisher of Rituals is a plausible choice if you want to go deep into it. However, consistency is a problem in this case. An Accesscode line involivng Halqifibrax is also included, which can be particularly explosive with Diviner as your summon target.
The Side Deck contains alternate options. Due to the deck having less removal compared to the Dogmatika variant, Super Polymerization alongside an Extra Deck full of targets is very valid. A package is included to illustrate potential wiggle room for Extra Deck tweaks, as many targets have Nekroz-benefitting levels, most notably Mudragon of the Swamp and Chimeratech Megafleet Dragon, the latter of which can function independently.Ash Blossom and an additional Shurit can be used over Gamma + Driver if the deck is too bricky for you. L7 Kaleidoscope targets in Prima Donna and Wind Pegasus, which lets you summon Unicore and Clausolas at once. Vanity's Ruler is valid over Kristya for being one-sided, but this combo makes Kristya much easier to access.
A 2019 Deck Profile from when this strategy was optimal can be found here as well.
This channel also has a few very basic combos with Impcantations in mind. However, it uses Zaborg over Ruler / Kristya which, while effective, is a brutal chokepoint that the deck usually can't afford. It also overrates Areadbhair by quite a margin.