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Kayn and Vayne Bring the Pain – A LoR Deck Guide

Vayne joins Kayn's Cultists – and, together, they are positioned as one of the strongest decks in Runeterra right now!

Vayne has been one of the most impactful champions released in the Darkin Saga: Domination expansion. Even after Tumble's nerf in the last balance patch, she has continued to dominate the meta. With her new partner Kayn and his cultists, they form a potent competitive deck that saw great success in the Worlds Qualifiers, and is currently one of the strongest decks in Runeterra.

Regions
Runeterra
3 cards
Demacia
16 cards
Rarities
30 400
champion
6
epic
6
rare
12
common
16
Mana cost
0
0
9
1
5
2
8
3
10
4
8
5
0
6
0
7+
Champions
6
3
Vayne
3
Vayne
5
Kayn
3
Kayn
Equipments
3
2
The Darkin Aegis
3
The Darkin Aegis
Followers
15
1
Buhru Cultist
3
Buhru Cultist
1
Forsaken Baccai
3
Forsaken Baccai
2
Petricite Broadwing
2
Petricite Broadwing
3
Blooming Cultist
3
Blooming Cultist
4
Ambitious Cultist
2
Ambitious Cultist
4
Combat Cook
2
Combat Cook
Spells
16
1
Momentous Choice
3
Momentous Choice
3
Cataclysm
2
Cataclysm
4
Furious Wielder
2
Furious Wielder
4
Riposte
2
Riposte
4
The Unending Wave
1
The Unending Wave
4
The Unforgiving Cold
1
The Unforgiving Cold
5
Concerted Strike
2
Concerted Strike
5
Heedless Resurrection
3
Heedless Resurrection
Open deck in builder

Vayne has had various powerful champion combinations in the past, including Rumble and Jax. Playing her with Kayn provides access to the stellar Cultist package, which lets us draw Kayn consistently and in turn make our deck very flexible, allowing us to answer a variety of threats. 

Let’s begin by discussing the role of the Cultist package in our deck.


Best LoR Decks: Kayn Vayne – Card Breakdown

Our Cult Draws Kayn 

As a Runeterran champion, Kayn has a unique Origin, The Shadow Reaper: summoning three units with the Cultist tag draws Kayn from our deck, allowing us consistent access to one of our champions by round five. Even before evaluating the value of each of these cards individually, they already provide a positive benefit due to Kayn’s Origin.

 

Forsaken Baccai is one of the best one-drops in the game, giving access to a Predict that allows us to choose our next draw from the next three options. Looking at your hand, you choose interaction to remove a key enemy unit, or look for more units if you are running low. Forsaken Baccai also has the added benefit of gaining +1|+1 when you predict equipment (The Darkin Aegis in our deck) or a Darkin (Kayn in our case). This additional buff lets us trade with Fearsome units in the early game and makes this one-drop less susceptible to pings.

Buhru Cultist is our other one-drop. With a 2|2 statline, this card has a good body that trades with other one- and two-drops while not dying to pings as Vile Feast. Buhru Cultist also has the additional effect of pinging the enemy Nexus when Equipped allies attack, thus dealing chip damage with the aid of the various cards that equip in this deck.

Blooming Cultist is another powerful Cultist – it has the Attune keyword, refilling one spell mana which is very useful for playing Equipment and our other high-impact spells. When a card is Equipped for the first time in a game, Blooming Cultist is granted Elusive, letting us deal three or more damage to the enemy Nexus by ignoring their non-Elusive blockers. This card is particularly potent when Equipped itself, making it more resilient. Playing Tumble on it is also an amazing way to deal damage to the opponent directly.

Ambitious Cultist is an interesting addition to the Cultist pool of cards. This follower has a good statline for a four-drop, but has no keywords that take advantage of said stats. However, Ambitious Cultist provides good value as it generates a free two-mana spell, which lets us trade favorably and surprise our opponent with our generated spell, which can be from any region. 

With the Cultists present, let's discuss what spells they offer us as part of this sinister package. 


Spells Spell Doom

Momentous Choice is one of the best spells in the game. It has already seen its glory days in the Nami meta, but is still an excellent addition. Once a unit has been Equipped, playing this spell gives you the choice of giving a unit Power or Health, twice. And even if this additional effect hasn’t been triggered, this spell's buff is very useful when needed.

The Unending Wave gives us a source of draw, which is discounted by two mana after a unit has been Equipped, giving us the extra cards we need to finish off a game or finding an answer to a situation we cannot deal with via our current hand. However, be careful when casting this spell, as the draws will be Fleeting – losing key cards such as The Unforgiving Cold can make certain matchups much more difficult.

The Unforgiving Cold is another powerful card released in the previous expansion. By itself, this spell simply Frostbites the strongest enemy unit, but when an ally is Equipped, this effect is doubled, as another copy of this spell is put on to the stack. This is a devastating combat trick as it disables two enemy blockers: our units can now trade favorably and remove the strongest enemy units, swinging the game in our favor. The Unforgiving Cold also counters Spellshield, as the first instance of the spell removes the Spellshield, while the second instance Frostbites the enemy unit.

Heedless Resurrection is the final Cultist spell we run. It has the powerful effect of reviving the strongest dead allied Champion, and this effect is discounted by two mana when an ally has been Equipped. This gives us three extra copies of our champions that we can play using spell mana, summoning threats that our opponent may not be able to deal with. It can also trigger Vayne’s summon effects and lets us summon Kayn for two mana less. Playing Heedless Resurrection also lets us take advantage of our champion spells if we have another champion in hand, which synergise very well with the units we play.

Furious Wielder is one of our key interaction cards: for four mana, we can pick one of our Equipped units to strike an enemy unit. Unlike a Fish Fight or Single Combat, this strike is one-sided, meaning that our unit will not take any damage, and we can remove key units such as Seraphine or [[Gwen]. We are happy to see this card after round four, to help us slow down the enemy gameplan.

Arcane power, powerful units… it's time to praise the leader of our glorious cult, Kayn!


Red Or Blue, Who's the Kayn for You?

Kayn is one of the most unique champions in Runeterra, hence deserving his own section in this deck guide. His game plan revolves around his Equipment, The Darkin Scythe, which he creates and equips automatically on summon. As a Challenger unit, he can interact with the enemy board, potentially removing key enemy threats. Although he has a low Power (just two), it grows quickly as The Darkin Scythe is granted +1 Power each time its bearer attacks. This lets Kayn's Power grow and lets him kill enemy units with high Health, and since the Equipment (rather than Kayn) is granted the attack, we can Equip The Darkin Scythe to another unit even if Kayn is killed. Kayn is also self-sustaining at Level 1, healing himself by two every time he kills an enemy unit. As such, he is a great mid-game tool to control the enemy board.

Kayn levels up after striking twice, recalling himself to our hand. This allows us to make some cheeky plays such as using Furious Wielder during combat to ghost-block one enemy attacker while killing another.

Once Kayn levels up, we can choose to transform him into Rhaast or The Shadow Assassin. As a general rule of thumb, Rhaast is a better choice. Rhaast heals himself to full and heals our Nexus for two health every time he kills an enemy, and The Darkin Scythe transforms into the Corrupted Scythe when we select Rhaast. The Corrupted Scythe grants itself +1|+1 when the bearer attacks, making Rhaast or another unit stronger over time. As such, Rhaast keeps us alive while growing stronger, presenting inevitability. Having Overwhelm also lets Rhaast deal damage through low-Health blockers and finish the game.

We can also transform Kayn into The Shadow Assassin, giving ourselves a high-Health Elusive unit with Challenger. We only choose this option when the opponent has less than 10 Health and we need to finish the game as soon as possible, in scenarios in which we know that we cannot control the game with Rhaast. It is very rare that we choose this option, but it is important to recognise when it is the correct one.

The Darkin Scythe transforms itself into Shadow Scythe, granting itself +2|+0 whenever the bearer attacks. We basically never use the Challenger keyword on The Shadow Assassin, rather using him in combination with Shadow Scythe to assassinate our opponent as quickly as possible, usually over one or two consecutive rounds. This is feasible thanks to Vayne’s Tumble, allowing us to greatly buff up Shadow Scythe and kill our opponent.

Kayn's Shadowstep is an excellent champion spell as it allows us to trigger The Darkin Scythe or its transformed versions and let Kayn strike and level up as quickly as possible. It also synergises with Rhaast, letting us threaten an enemy unit and heal two. Being able to draw Kayn via his Origin means you will play this champion spell quite often, giving you another way to interact with the enemy board. This card is not as good with The Shadow Assassin as we do not take advantage of the Elusive keyword, but still lets us threaten an enemy unit.

With the Cult-y part of the deck uncovered, let’s rally under the other half….


FOR DEMACIA!

 

Cataclysm is a phenomenal card, letting us trigger attack effects such as the one on The Darkin Scythe while forcing an enemy unit into combat, usually killing it. This card can remove an enemy unit, can be used to threaten Overwhelm damage, AND trigger Vayne’s level-up condition, making it an amazing inclusion in our deck. And all for the price of three mana!

Petricite Broadwing has been a Demacian staple since its release, being an efficient 3|3 Challenger that often kills two enemy units for the price of one. This is our best round-two play when followed by Vayne or any other unit to grant it Challenger. It can remove a variety of early-game units, and becomes even better when equipped with The Darkin Aegis – which grants +1|+1 and Tough – allowing everyone’s favorite bird to survive and control the board longer.

Speaking of The Darkin Aegis, this is one of the best Darkin Equipment in the game. Giving a unit Tough and +1|+1 for two mana is very good, as it makes the unit immune to pings and allows it to survive against spells and more combat encounters.

As an added bonus, we can play this card for five mana as Joraal –  although Joraal’s statline is not the best for five mana, his attack effect is amazing: he increases the cost of enemy spells by two mana while attacking, making it harder for the opponent to interact with damage spells or combat tricks. He also has the Challenger keyword, letting him remove units with ease.

We do not play Joraal often in this deck (we have Kayn as our five-mana play) but Joraal's bonus is amazing when we need the extra unit or removal, especially against Seraphine decks that like to sling spell after spell in response to attacks.

Riposte is seeing play in this deck due to its double function: it protects a unit by giving it Barrier, and also gives +3|+0, letting us kill an attacker which we may not have a way to deal with otherwise. This is amazing against other Demacia decks, or against Quick Attack units such as Gwen. This card is pricey, though, which means we need to plan out our rounds and see when we would need this effect.

Concerted Strike is another Demacia staple, and for good reason. It lets us pick two of our units to strike an enemy, almost always guaranteeing a kill even through combat tricks. It is interactable via combat tricks, Deny or self-target effects, but is still a great way to deal with a pesky foe.

 

We play Combat Cook simply because it's a good card. Being able to Improvise and Forge an Equipment gives him a high statline that can trade multiple times, and even after the Cook's death the forged Equipment can be given to another unit. He provides a lot of value for four mana, and is another way to trigger our Equipment synergies. 

With the Demacian army in check, we need to call up our tumblin’ commander: Vayne.


You See Me Tumblin’

As mentioned before, Vayne has taken the LoR metagame by storm. She has a very good statline for a three-drop, allowing her to trade and survive a variety of damage spells. She levels once she has seen four of our attacks, but her real power comes from being able to generate Tumble, a four-mana spell. Tumble allows you to start a free attack with a unit, equipping it with Equipment that costs two mana or less. This results in self-synergy as Tumble contributes to her level-up, and lets her cheat out Equipment while attacking, impacting the board positively whenever Tumble is played. 

If you thought Tumble was expensive at four mana, don’t fret, she discounts Tumble by one mana each round she is on the board, allowing you to choose the right time and appropriate cost to cast it. As such, one of the key understandings to master Kayn Vayne is recognising when to play Tumble and on which unit, considering the potential answers the opponent could have. When leveled up, Vayne (level 2) creates free Tumbles in hand, letting us attack again and again, as expected of Demacia.

Condemn is an amazing Champion spell to have access to, as in dire situations we can play a six-mana one-sided strike to kill a game-ending enemy unit. And at its best, when we attack twice, we have access to a one-mana strike that the opponent has difficulty playing around due to its cheap cost. Having another way to interact with the enemy board never goes amiss!


Tech Choices

Single Combat is a potential inclusion, especially over The Unending Wave or a copy of Riposte. This gives us another cheap way to interact with the enemy board and level up Kayn. Fish Fight can be considered for the same reasons, although Single Combat would be my choice since it's a Fast-speed spell.

Bloodcursed Harpy is a consideration if we wish to play for the late game, in order to have another finisher. Having two lives and the Scout keyword makes the Harpy a phenomenal offensive option (if in doubt, just check how much work Bloodcursed Harpy puts in Quinn Vayne, another Vayne archetype that is among the strongest decks in LoR). It also synergises very well with Tumble, letting us Rally after the Scout attack. 

Another potential consideration is Ranger-Knight Defector, as it is another Scout unit that speeds up Vayne’s level-up. However, Scout is only granted to it once a unit has been Equipped. Alongside the Tough keywork, this unit has no problem attacking multiple times and being even more threatening when Equipped. It also has the added bonus of being able to draw Kayn by having the Cultist tag.


Kayn Vayne – Mulligan

When mulliganing, we are happy keeping a Forsaken Baccai as a round one-play that lets us predict and choose our next draw. Vayne is also a keep and a card we are looking for to start putting pressure on our opponent, and take advantage of Tumble. Petricite Broadwing and the The Darkin Aegis are also nice to have as we can activate our Equipment synergies early, and have a Challenger unit that can go after early threats like a Seraphine or Katarina.

We almost never want to keep Kayn, as we can draw him via his Origin (by summoning Cultist followers) or naturally over the course of the game. Having multiple Kayns is only good when we have one in play, otherwise it bricks our hand. A common playline is to play Forsaken Baccai into Buhru Cultist, then playing a third Cultist unit on round four to have Kayn in hand by round five.


Kayn Vayne – Matchups

Shadow Isles Control Piles – favored

With the popularity of Equipment, Quietus has been a staple in Shadow Isles decks and breathes new life into Shadow Isles control archetypes. Regardless of the combination of enemy Champions, our deck does quite well due to our slew of threats, and our ability to end the game before the control deck comes online.

Being Demacia, and having access to Rally effects in Tumble and challengers such as Kayn, makes it very difficult for our opponent to stick on the board engines such as Norra or Heimerdinger. Having access to combat tricks lets us dodge Quietus, and Heedless Resurrection laughs in the face of kill spells like Vengeance. Remember, however, that you must kill the opponent as soon as possible, before they get their control plan online and kill you with a spell such as Feel The Rush.


Twisted Fate Annie – Unfavored

Noxus decks are traditionally not a good matchup for Demacia, and this holds true for this deck. Ravenous Flock and other damage spells make it very difficult to stick our units on board, making it difficult to execute our gameplan. Ravenbloom Conservatory gives our opponent access to Tybaulk, increasing the damage of all spells and skills by one and making this matchup truly hell.

I would try to remove the enemy board and kill them as quickly as possible – as soon as Tybaulk comes down, it is very difficult to trade with enemy units and damage their Nexus. And once Riptide Rex comes down with Tybaulk’s effect in play, our board is decimated and there is no real way to come back.


Mirror – even (becomes favored after reading this guide, of course!)

 

The mirror match is quite champion-focussed. Having Rhaast or Vayne (level 2) pretty much wins the game, as we out-value the opponent who cannot deal with Rhaast’s infinite scaling and Vayne’s relentless free attacks.

That being said, our disruptive tools are key in this mirror. Riposte is famously known as the Demacian mirror-breaker, as Barrier almost always wins an exchange. The Unforgiving Cold is another brutal card, as Frostbiting two enemy units lets us force favorable trades. While having access to these tools, it is important to play around them. Killing enemy champions and leveling your own is a fail-safe way to win the mirror.


Conclusion

Vayne Kayn is another spicy take on the new Demacia cards, and takes full advantage of Kayn and the cards he offers – it's also the first truly competitive Kayne deck since he was released, and Kayn Vayne is one of the best LoR decks right now.

This deck takes advantage of slower decks, and forces them to go toe-to-toe in combat. I hope you enjoyed this deck guide, and I’ll see you tumbling around Runeterra!



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