(First of all, i apologize it took me so long to make the part 2 of this guide, it was supposed to be updated each day with the faction i featured a swarm deck in the 'deck of the day' thread, but i ended up delaying it
)
PART 2 - SCOIATAEL, SYNDICATE, MONSTERS, NILFGAARD
SCOIATAEL
Scoiatael is another faction that swarms pretty well, but isnt meant to be used for swarm - you can deduce this by how few swarm payoffs it has available. Still, it has 3 main 'species': elves, dwarves and dryads and its viable to swarm with any of those.
-ELVES
Elves are probably the easiest to swarm with, thanks to the leader Deadeye Ambush (the best for ST, IMO), the elf scenario and vernossiel, which can quickly fill up the board with deadeyes, the 3pt elf tokens. Then it has Isengrim, one of the best swarm payoffs in the game.
-DWARVES
Dwarves are known to boost. Brouver Hoog is a powerhouse of wideboosts, since unlike most of those, its not a deploy but every turn effect (on the row), and very hard to beat without contering in some way.
Barclay Eeels and Mahakam guard are very similar and boost by the number of dwarves on a row. Even Zoltan Warrior can be a source of swarm boosts if you manage to put a lot of rowdy dwarves.
-DRYADS (SYMBIOSIS)
Alright, so i cheated, its not exactly the dryads that swarm, its the treants spawned by symbiosis and playing nature cards. There's absolutely no swarm payoff here, you have to fetch one from the other ST or Neutral possibilities.
-ROWSTACKING + ROW MOVEMENT
If swarming is filling the board (both rows), filling a row is half-swarming, so i still consider it.
Plenty of ways to quickly fill a row with ST, then you can use movement Witchers like Gaetan to get damage instead of boosts, Gezras (boosts backrow, turn effect), Great Oak for either selfboost, damage or a mixor Dennis Cranmer to boost backrow, like a 1 time Gezras (i didnt included him in the dwarves section because he can boost any unit, not just dwarves)
(EDiT) Bronze ST witchers added in WOTW also benefit from rowstacking - i forgot cuz i never use them, sorry...
-SPELLATAEL
Just a small nod to the possibility of Simlas + double bone talisman, which has a devastating potential of 38pts on a full board, and can obviously be used in any ST deck, not just Spellataels.
SYNDICATE
Syndicate is a faction divided by gangs, and one of those is clearly meant to be used for swarm: FireSworn (Congregate Leader).
-HELVEED
Probably the best way to swarm quickly with SY, assuming you have plenty of coins (he has 4 profit, so dont overprofit, but no cooldown, so the only limit is the row space)
-LT. VON HERST
A great 2pt per turn passive engine, that is actually more used in Hidden Cache than Congregate due to his hoard condition. He's a 6 for 8 if countered immediately, but 20 for 8 if uncountered and the round is long enough to fill up his row.
-JACQUES AND CONGREGATION
One expensive, one cheap, but for swarm purposes, they both put 3 bodies on the board.
-FALLEN KNIGHT AND ETERNAL FIRE PRIEST
These are swarm payoffs,but unlike other payoffs, they are engines and must be played before the swarming (which is mostly done by spawning). The former boosts for every unit and every crime, the latter is a discount version that only boosts for every time units are spawned (so if you spawn 3 units instantly, it only boosts by 1)
-KEEPER OF THE FLAME
Pay the tribute, boosts the whole row. Boring.
-FIRESWORN SCRIBE
This isnt exactly a swarm payoff, but it allows some insane possibilities: with 2, every unit spawned by Helveed is free, with more, you actually profit from it! Its one of the best ways to generate infinite points in a certain seasonal mode, only limited by fast clicks, animations and 60sec turns.
-LONELY CHAMPION
Another funny little card, that is a sort of 'swarm enabler' - in decks that swarm so much that the board space is an issue, this opens up more space for you to swarm some more (and is immune and protects from wide punishment)
-SACRED FLAME
Similar to a bone talisman on order (only boosts firesworns), with 2 extra bodies (zealots) attached.
-DIES IRAE
Another card similar to a bone talisman, but with a few advantages: echo, so it can be used on two rounds; has a 3dmg effect, and unlike sacred flame, if it has deathblow, it boosts ALL of your units like a BT, so theoretically it can be used with other SY units outside firesworn.
MONSTERS
MO is the 'de facto' faction for swarm. It has swarm tools like no other, a swarm leader and even multiple viable swarm strategies and styles.
-ARACHAS AND INSECTOIDS
Arachas Nest is the cheapest swarm card in the game - 4 prov for 4 units (5 if used with AS leader).
The AS leader spawns an extra drone with every organic, so you can even be using control cards like natural selection, pred dive or parasite and still swarming. WIth this leader you can swarm the whole board cheaper than everyone else, just 2-3 bronze cards.
-ARACHAS BEHEMOT
A unit that both helps swarming and is swarm payoff. 8pr, 13 max point potential (which is easy to achieve). And also helps put the drones outside of 1pt removal range like tremors, toruviel, wererat or gerd.
-KIKIMORE QUEEN
A card that was very popular, used with Caranthir to create multiple copies and generate a ton of points by boosting all insectoids on a row through thrive, in a very similar fashion to the card that replaced it.... Koschey.
-KOSCHEY
Also typically used with Caranthir, since its thrive is immediately triggered by Caranthir himself, giving some value before the opponent has any chance to counter, and with the armor it has, makes countering it much harder.
This can be used to swarm the whole board, but before the adrenaline, it only spawns drones, not endrega larvae, which isnt worth the risk of having the koschey countered before the adrenaline is reached, and would also risk overswarming.
-GLUSTYWORP
Not as popular as it used to be - before, it was the staple of AS decks. It is both a swarm payoff, a control tool (since it also consumes the enemy 1pt units) and a swarm enabler, opening up space on your board (although he's not used this way, usually he's used as finisher, specially with last say in order to avoid having him destroyed).
----------------------------------
-RATS AND BEASTS
Even though Arachas is more known as a swarm archetype for MO, rats and beasts arent worse, they're just different, with some pros and cons.
It has more synergy with deathwish and consumes, and actually has the fastest way to swarm in the game - Overwhelming Hunger leader, caranthir and plague maiden, you can have 17 units in 2 turns!
-PLAGUE MAIDEN
The most expensive DW unit (and one of my all-time favourite cards
). Generates 7 (1pt) rats on consume. Simple and effective way to go wide.
-NIGHWRAITH AND HAUNT SCENARIO
Nightwraith is a sort of mini plague maiden, but spawns 2 rats on deploy, and 2 more on consume. It's also the 2nd chapter of MO scenario, which is based on DW/consumes but also supports swarming.
-WERERAT
A consume, quite tricky to use, but it allows to convert points into units, more specifically, rats.
-CHIMERA
A consume and swarm payoff, that can be used effectively with either arachas or rats that filled a row. And you can easily get a 3rd copy of this with MO location artefact.
-MORVUDD
The best swarm payoff wideboost, boosting all beasts. Remember the double plague maiden i mentioned? That spawns 14 rats, so its a 20pt Morvudd on that case, although then you dont have space for anything else like Yen or Triss TK which are also great in that deck.
----------------------------------
-SELFEATERS
This amazing (OP) unit - which i built a whole deck around - can swarm easily if left uncountered, a new unit every turn, but is also its own swarm payoff, strengthening (even better than boosting) with every relict played.
-BLOODY MISTRESS/ GERNICHORA
Needs Sabbath - no problem, its almost impossible to deny sabbath to MO for a mid-long round.
Spawns 2 fruits, so its 3 bodies, 3 engines. With Caranthir, you get 6 (7 counting Caranthir). With Idarran, even more. Doesnt need swarm payoff has they're thrive engines, which are some of the easiest to trigger.
-MOURNTART
This is a meme card, but it can definitely be considered a swarm payoff... Except not like the others, in this case the swarm must have been done on previous rounds, and be in the graveyard, to get a massive amount of points. It has 2 problems though: all tokens are doomed, so they wont fill your graveyard, so you need to purify them if you want them to count for Mourntart, and also has order and a very little body, which makes her a very risky play, needing protection or zeal with defender, caparace leader charge or zeal potion and with last say.
NILFGAARD
The Empire is not known for swarming... In fact, i will go further and say its both the least adequate to swarm and with least amount of swarm punishes (so swarming is great against NG). But its still possible to make some funny things...
-DAERLAN SOLDIERS
Daerlans are 2 bodies, so its quite a slow process to swarm with them. But with Ramon, Vigo, teleport or Vrygheff, you can swarm effectively with them, and Vreemde is then a great swarm payoff, which boosts those soldiers by 2 instead of 1 like most wideboosters.
-SLAVE INFANTRY AND GERMAIN
Another NG bronze soldier, and it definitely doesnt swarm, as it only transforms another unit... but with Germain, which creates 4 instant cows, with more on a cooldown 3, its a great combo to use him with slave infantries that resembles a swarm + swarm payoff.
-CAHIR AND YENNEFER (RANGED)
Cahir is not a swarm card at all, but it's somewhat related - if you play Cahir, and manage to keep it alive, you can play Yennefer and Cahir will neutralize the boosts on the opponent side (they still happen, but Cahir will receive the same amount), which is a good swarm payoff. And if you manage to get 2 Cahirs (through Letho KS), you even benefit from swarm done by the opponent. But Yrden on either sides is deadly with this deck.