Tearalaments (Pure)

The goal of this deck is to establish several interruptions while recycling cards in your Graveyard to make powerful Fusion boss monsters. Thanks to Extra-Deck consistency tools like Tearalaments Kitkalos, the deck is quite consistent and capable of easily cycling through a variety of different Fusions to suit your needs. Ideally you will go first, summon Kitkalos, search out Tearalaments Salic and summon some number of Tearalaments and other Fusion monsters, but thanks to plentiful room for tech cards, handtraps and the archetypal handtrap of Tearalaments Haufenis, the deck is reasonably competent when going second. My ratios and reasoning are as follows:

Main Deck:
3x Tearalaments Rainoheart - the main character of the deck and your most reliable starter. On summon he mills any Tearalaments monster to instantly make a fusion, usually Kitkalos, and he can be sent from the hand or deck off of a variety of cards to trigger his effect to special summon from the GY. Absolutely mandatory at 3, as he is the best normal summon and discard fodder in the deck, and most of the time you will either want to open him or search him out using Kitkalos or the Field Spell.

3x Tearalaments Shaylen - the archetypal extender. Shaylen is fantastic as she can be used to pitch any cloggy monsters in hand to trigger their effects while also milling 3 more cards from your deck, which will typically enable a fusion play. As this deck has a good amount of RNG involved in its plays, you want as many Tearalaments names as possible in the deck to ensure that Fusing is always available, so as of now I would argue every Tearalaments Monster should be played at 3.

3x Tearalaments Haufenis - an archetypal handtrap/extender. Haufenis relies on your opponent to trigger her hand effect, but in exchange enables some nasty Fusion combos on your opponents turn, including on turn 1 when you're going second. Depending on the cards you mill off of her, you can make a variety of powerful interruptions on your opponents turn such as Millennium-Eyes Restrict (if King of the Swamp is milled- more on this later), Predaplant Dragostapelia (after making Kitkalos and using her to mill a different Tearalaments monster), and even El Shaddoll Winda (if Shaddoll Beast is milled).

3x Tearalaments Mieru- arguably the worst of the bunch as she can clash with Rainoheart for your normal summon, Mieru gives you an additional option for milling cards to continue your combos and set up your GY. A common play is to summon her off of the effect of Kitkalos to mill 8 cards from your deck and almost always enable 1-2 Fusions.

3x King of the Swamp- King of the Swamp fulfills multiple roles in this deck, allowing you to search out Polymerization to allow for alternative methods of Fusing without relying on milling Tearalaments and also can serve as any specifically-named fusion material. King of the Swamp allows you to make far more than the otherwise limited pool of Fusions Tearalaments would be capable of making, most notably cards like Millennium-Eyes Restrict (who requires Relinquished as material) and Lubellion the Searing Dragon (who requires Fallen of Albaz as material). King of the Swamp is also an Aqua-type Monster, meaning it can serve as one of the generic materials for Kaleidoheart and Kitkalos, and it can also be used in place of Rainoheart in order to make Kaleidoheart. As you will be Fusing using materials in your GY, discarding it to search Polymerization essentially gives you free GY setup while searching you a potential extender. While you could theoretically play less than 3, the card gives you enough value and versatility that I currently max out on it.

2x Shaddoll Beast- a Shaddoll played to enable summons of El Shaddoll Winda. You could play any of the Shaddolls for this purpose, but I've found that Beast is generally the best as it gives you a Draw when sent off any of your card effects, such as any mill effect or if sent from the hand for Shaylen. I currently play 2 to ensure I see it frequently enough without bricking on them, but you could easily run more/less Shaddoll names by preference.

3x Gameciel, the Sea Turtle Kaiju / Ash Blossom & Joyous Spring / Ghost Ogre & Snow Rabbit / Infinite Impermanence- the going-second cards. These 12 flex spots could be anything you feel like playing to suit your particular meta, but I like these particular handtraps due to their versatility. I play 3x Gameciel as it is not only a powerful removal option (and this is somewhat lacking in non-targeting removal effects), but also because its Aqua typing allows it to be used as Fusion material for the Tearalaments Fusions if milled.

3x Perlayno, the Primal Parallel Ruined Realm / 1x Terraforming- the Field Spell(s). Perlayno searches for any Tearalaments Monster on activation, allowing more access to your combo pieces. Furthermore, Perlayno can pop a card on either field whenever you use one of your Tearalaments' Fusion effects (once per turn), allowing you to break boards, have an additional interaction when Fusing on your opponent's turn, and trigger your cards that activate upon being sent to the GY (such as Kitkalos' effect to mill 5). I max out on the Field Spell as it isn't currently searchable and can grab any Tearalaments Monster you want, but you could drop Terraforming if you find it cloggy.

2x Polymerization / 1x Instant Fusion- Polymerization is here as a free card off of King of the Swamp and to enable alternative routes for Fusion Summoning, while Instant Fusion can be used to instantly make Kitkalos, who in turn searches for any Tearalaments card in your deck. Instant Fusion can also be used to make Time Wizard of Tomorrow to break boards, or Millennium-Eyes Restrict to counter some common handtraps and interactions. You could cut these cards if you find yourself wanting more room, but I've found this to be a comfortable ratio.

3x Tearalaments Salic- Salic serves as a reliable interruption, a consistency enabler and a method of Fusing during your opponent's turn. If milled or sent by any effect it searches for any Tearalaments monster, and utilizing the on-field negation effect allows you to trigger any of your Tearalaments effects at will. I run 3 as you want to both have one copy in hand and at least one to mill for the searching effect.

1x Tearalaments Metanoise- Metanoise gives you a Book of Moon-like interruption while also milling a Tearalaments monster in the process, allowing you an additional method of Fusing as a quick-effect. However, the GY effect of Metanoise is surprisingly niche as you'll rarely end up in a position with monsters to add back from your GY to your hand as they all shuffle themselves back into your deck when Fusing. As a result, I only run the 1 copy as it is very searchable and you'd rather not hit this with your mills early-on, but you could easily play more copies.

Extra Deck:
3x Tearalaments Kitkalos- the main fusion of the deck, Kitkalos allows you to have a high degree of consistency while enabling large chains of effects. She is easily summoned, giving you the ability to search or send any of your Tearalaments cards at will from almost any position. Most commonly, you'll use Kitkalos' effect on herself to summon a Tearalaments Monster from hand/GY while triggering her effect to mill 5. While she can technically be recycled infinitely, I run 3 copies to ensure that I always have access to Kitkalos even if one gets banished or if you play a bit fast and loose with your Fusing, but you could just as easily run 2 copies if you find yourself wanting more room.

2x Tearalaments Kaleidoheart- the main boss of the deck. Kaleidoheart is a quick-effect shuffle into deck on summon and whenever an Aqua Monster is sent to the GY by card effect, allowing you to easily spin cards on either player's turn. He also can special summon himself from the GY for free whenever he is sent there by a card effect, and mills a Tearalaments card in the process. This frequently comes in handy both for making him difficult to out and also allowing him to serve as an extender by milling a Tearalaments Monster for their Fusion effects, or by milling Salic/Metanoise for their GY effects. I run 2 copies as he is the biggest monster you can summon off of Tearalaments Monsters in order to push for damage, as well as to have one as a backup in case the first is banished, but you can technically recycle him off of the reborn effect of Kitkalos and could thus get away with only playing 1 if you so desire.

2x Predaplant Dragostapelia- one of your main forms of interaction, Dragostapelia can be made with surprising ease in this deck and gives you access to a simple negation effect on a soft once-per-turn. I play 2 as you can frequently make 2, and one can be recycled by fusing into a new copy using the one in your GY. Furthermore, the materials of Dragostapelia allow you to recycle any of your other Fusions, giving Tearalaments a strong grind game.

1x Lubellion the Searing Dragon- made using King of the Swamp as material, Lubellion allows you to put an additional body on the field while Fusing, or to recycle Monsters from your GY/Banished zone. Lubellion also satisfies the requirement to use the effect of Mirrorjade the Iceblade Dragon.

1x Mirrorjade the Iceblade Dragon- a strong non-targeting quick-effect banish that can be made using King of the Swamp and any Extra Deck monster, with an additional boardwipe effect if it gets removed. Mirrorjade can be a bit difficult to summon reliably due to its awkward material requirements, but its effects are certainly strong enough to make up for it.

1x El Shaddoll Winda- made using a milled Shaddoll Beast, Winda gives you a devastating floodgate that can be extremely difficult for some decks to play around/out. Tearalaments play quite nicely around her effect as well, as you rarely need more than one Special Summon per turn after establishing a field and you can easily get rid of her by using her for a Fusion if need be.

1x Time Wizard of Tomorrow- made using King of the Swamp in place of Time Wizard, Time Wizard of Tomorrow is a bit of a niche board clear typically used when trying to power through tough fields or as a last-ditch nuclear option. I don't often make it, and as such could easily be replaced by anything else should you desire to do so.

1x Millennium-Eyes Restrict- made using King of the Swamp in place of Relinquished, Millennium-Eyes Restrict allows you to counter all manner of handtraps and disruptions while removing cards from your opponent's field/GY. As Millennium-Eyes Restrict isn't a hard once-per-turn, you could easily play and potentially summon more than 1 should you choose to run more.

1x Number 39: Utopia / 1x Number S39: Utopia the Lightning- I run Utopia the Lightning as an Extra Deck out to get rid of things this deck otherwise has a hard time clearing. Untargetable/indestructible Monsters like Red-Eyes Dark Dragoon and unaffected Monsters like The Arrival Cyberse @Ignister can be a problem for this deck as nearly everything in this deck either targets or destroys, but luckily there are no restrictions anywhere on your effects that prevent you from running toolbox monsters in your Extra Deck to deal with said problems. While this is the option I currently run due to its low material investment, you could also play other removal options such as Borrelsword Dragon, Accesscode Talker (with a Link-3+ in your Extra Deck) or Underworld Goddess of the Closed World, though they can be difficult to summon under fire.

1x Time Thief Redoer- Redoer has an interesting place in this deck, as he is a relatively strong generic Xyz Monster that happens to detach his materials as part of his effect, rather than for cost. This means that Redoer can be used to trigger the effects of the Tearalaments Monsters you use to Summon him, those being the Fusion effect of Shaylen and the revive and subsequent mill effect of Rainoheart, and as a quick-effect no less.

The Side Deck in this list is currently comprised of some other options you could run.
-Mare of the Shore is a decent normal summon who fulfills the same role as Rainoheart while also being an Aqua Monster for your Tearalaments Fusions.
-Invoked Caliga is a powerful floodgate Fusion you can make using King of the Swamp in place of Aleister the Invoker.
-Mudragon of the Swamp can technically be made in this deck to recycle any non-Aqua Dark Monster and give your Monsters targeting protection.
-Knightmare Phoenix, Cerberus and Unicorn are decent generic Link Monsters that can be somewhat easily made, though their roles are covered by various Tearalaments cards anyway.
-Super Polymerization can be used to great effect in this deck as it naturally plays a myriad of generic and semi-generic Fusion Monsters, and King of the Swamp can be Set to allow you to Fuse away any monster using Super Polymerization for something like Millennium-Eyes Restrict (who can be made using any Effect Monster).
-Tearalaments Crime is the archetypal omni-negate Counter Trap, and while it is indeed a powerful effect, I found it to be too costly to be set up reliably. The GY effect isn't particularly useful either, and with no current in-archetype way of recovering milled spells/traps, I feel it best to ignore Tearalaments Crime for now.
-Foolish Burial Goods can be used to send Tearalaments Salic/Metanoise to trigger their GY effects, allowing you to search or recover a Tearalaments Monster at will. However, I found it to be somewhat redundant as the deck already has many ways of doing this, not to mention that Foolish Burial Goods can be bricky and does nothing for you if milled. I would play at most 1-2 copies if you do decide to play it.
-Foolish Burial falls into the many of the same problems as Foolish Burial Goods. It can potentially allow you to extend and mill a Tearalaments Monster to trigger their effects, but it felt redundant and unncesessary to me.
-Reinforcement of the Army can be used to search Rainoheart as he happens to be a Warrior Type Monster, but I generally felt that the deck has enough ways of getting to him without it.