Visas=Starfrost has new friends, and the TCG has a new archetype. Tearalaments are an archetype of DARK monsters that mill cards on summon and then return them to the deck for effects. As they've only just been released, it's too early to tell how good they'll be, if at all. However, the nature of their effects can give many ideas as to how the deck might look in tournament play.
Frozen Hell
A fire-themed archetype that's DARK, and a water-themed archetype that's DARK. What else is new? The Burning Abyss monsters famously get their effects when they're sent to the graveyard. It would pair well with an archetype that constantly mills from the top. And despite how flavorful it would be for them to be FIRE and WATER, being DARK gives them access to good generic support like Allure of Darkness and even Predaplant Dragostapelia. The downside of this strategy, though, is that Tearalament is more like a BA enabler than an equal partner. Besides the Predaplants, there aren't many ways to fuse a Tearalament and a BA. This limits the range of the Tearalament half to just milling cards. Plus, mixing the two requires careful combo construction. Since BAs destroy themselves if they share the field with a non-BA, using both might require, say, summoning Cherubini, Ebon Angel of the Burning Abyss before making a Tearalament play. Again, this could put a limit on the lines the deck could take.
Dolls of the Deep
Like BA, Shaddolls also get their effects when sent to the graveyard. And like BA, Shaddolls and Tearalaments would benefit from their shared DARK attribute with generic support. But unlike BA, Shaddolls don't destroy themselves at the sight of a stranger. This gives them further leeway in the way combos are constructed. Furthermore, Shaddolls allow Tearalament to shine a little more in the Fusion department. Notably, El Shaddoll Winda only needs a Shaddoll monster and a DARK monster to summon it. If it wasn't easy enough already, most of the main deck Tearalament monsters make a Winda lock even easier. Still, beyond Winda, there aren't too many creative fusion lines. The generic fusion doesn't work the other way around; Shaddolls can't be used to make the Tearalaments Fusions.
The Princesses and the Frogs
PaleoFrog is pretty classic at this point. Some combination of Swap Frog, Dupe Frog, and Ronintoadin gets Toadally Awesome or a Paleozoic Xyz monster. The Paleozoic trap cards not only disrupt the opponent's turn, but also revive from the graveyard. Adding Tearalament can give the deck an even further dimension. The frogs can help make the Tearalament Fusion monsters, and the Tearalament main deck monsters can mill Ronintoadin and the Paleozoic traps. There's no need to worry about wasting the frogs and traps, either; the Tearalaments return their fusion materials to the deck. A milled frog or summoned Paleozoic can easily be recycled, ready to be used again - in true frog fashion. Tearalaments might give PaleoFrogs some new tools for their boards while also giving them a new degree of continuous staying power.
Golden Land Submerged
Okay, this is a bit of a weird one, but the concept is really cool. Like Paleo, Eldlich the Golden Lord and its related traps benefit from going to the grave because they can revive themselves and get more traps. Tearalament can mill Eldlich cards to get the deck going, just as people used a Lightsworn package in the early days of Eldlich. And Eldlich has always paired well with a good normal summon. Normal summoning Tearalaments Meiru, milling a Tearalament, fusing into Tearalaments Kitkalos, and searching Tearalaments Salic, is a really nice combo that only takes one card and a bit of luck. And the idea of having Tearalaments Salic live along with all of Eldlich's other traps is tantalizing. Conquistador of the Golden Land and Huaquero of the Golden Land both summon monsters that can be foddered for Salic's negate. And when necessary, Golden Lord can get rid of Salic to summon itself. There are many ways to play Eldlich, and this isn't necessarily the best one, but the synergy exists - theoretically.
Storm at Sea
Chaos is a deck that dumps everything into the graveyard, banishes some of it, and spits a disgusting turn one board out of the mouth of Charybidis. And when Chaos cards like The Chaos Creator and Chaos Valkyria get paired with the Thunder Dragon archetype, which also benefits from going to the grave and banished zone, fearsome monsters like Thunder Dragon Titan come to wreak havoc. Tearalaments, a DARK archetype that mills cards and fuses from grave, could easily fit into this deck. The Chaos cards can take advantage of the DARK attribute, while the Tearalaments can tutor backrow like Salic to add to the endboard. Even if a Tearalaments mill doesn't immediately result in a Fusion summon, it still puts so many cards in the graveyard that Chaos Thunder gets quite a bit of value regardless.
There's no guarantee that any of these ideas will show up in frequent play. But Tearalaments has so many good things going for it that it's hard not to speculate. It has many good effects and has good potential synergy with other powerful engines. It's a deck that will definitely see lots of time in the lab; but whether it will rise from the deeps and break the surface remains to be seen.