Kennen - Heart of the Tempest is one of the early Vendetta counter targets worth learning, and it plays differently from the spell-control legends you may already prep against. Kennen does not want to grind you out with removal. It wants to build a single decisive turn: play a card from somewhere other than hand, empower the legend, then convert that status into an attack that scores where the extra Might matters.
A note on how we write this. Kennen is a brand-new legend, and we don't hand you a card-for-card "list" we can't verify from our own data — nor do we send you to a third-party tournament tracker to find one. What we give you instead is durable: the gameplan Kennen is running, the mechanics that make it work, and a counter plan keyed to those mechanics. Search cards in the card database, build your counter package in the deck builder, compare public shells in Riftbound decks, and map the matchup on Riftbound Counters.
What We Can And Can't Tell You
Kennen is new enough that we do not have verified first-party card data or a current Vendetta list for it on record, so we will not dress up a specific package as "the deck." A counter plan built on a guessed list rots the moment the metagame shifts; a plan built on "here is what Kennen is trying to do, and here is how to make its key turn fail" keeps working. For the set's mechanics and current rules, read Riot's official Vendetta overview and Vendetta core rules patch notes — Riot makes the game, so that is our source for legality, bans, and errata.
What Kennen Is Trying To Do
Kennen's legend rewards the pilot whenever they play a card from anywhere other than their hand, then lets Kennen spend that status to give a unit Assault for the turn. The deck therefore wants to create a two-step turn:
- Play or replay a card from outside the hand so Kennen becomes empowered.
- Convert that status into an attack that moves to the battlefield where the extra Might changes the math.
That is why the matchup can feel quiet until it suddenly is not. Kennen does not need every card to be a threat. It needs one reliable outside-hand play, one unit worth empowering, and one battlefield where Assault flips the combat. Official Vendetta materials name Flow, Burn, and Empower as the set's new mechanics, so the relevant counter question is not "can I remove every card?" It is "can I make the outside-hand play awkward, then make the empowered attack fail to score?"
The Kennen Counter Rule
Make the empowered turn happen on your terms.
If Kennen gets to play from outside the hand, empower, and hand a unit Assault at the battlefield that is already winning, you are reacting too late. The better plan is to contest early, keep the board spread enough that one movement or Ganking line does not decide the map, and make the Kennen player spend the outside-hand card defensively. The cleanest Kennen games are not the ones where you never let the legend empower — they are the ones where empowerment costs the opponent a card, a battlefield, or a scoring window instead of giving them all three.
How To Beat Kennen
1. Pressure Before The First Outside-Hand Chain
Slow hands are dangerous here. If your first meaningful play is turn four, Kennen can spend the opening turns building the exact graveyard, discard, or replay texture that makes the legend free to empower. Keep an early unit that contests a battlefield and forces Kennen to spend cards on board presence. Even a small body is valuable if it makes the first outside-hand turn defensive rather than proactive.
2. Separate The Source Play From The Score
When Kennen plays a card from outside the hand, do not automatically spend premium interaction on that card. Often the outside-hand card is only the trigger — the unit that receives Assault is the part that changes the score. Ask two questions in order: what card is giving Kennen the empowered status, and which unit or battlefield is receiving the extra attack pressure? If you can answer the second cleanly, you may not need to burn a narrow answer on the first. Disrupt the outside-hand play if your deck can do it without losing tempo; otherwise, preserve the answer for the attack that actually matters.
3. Make Assault Bad Math
Assault gives a unit extra Might while it is attacking. Do not block as if the printed Might is the real number. If Kennen has an empowered legend and a ready attacker, count the bonus before you commit. The best counter package has one of three answers: a blocker that still wins after the Assault bonus, an effect that prevents the attack from scoring — a stun, exhaust, bounce, or removal — or a second battlefield that forces Kennen to spend the empowered turn on the wrong lane. Do not use a premium answer merely because a unit is empowered; use it when the empowered attack changes the scoreboard.
4. Respect Replay Value Without Giving Up The Board
This archetype leans on replayable, spell-value threats that can create another outside-hand event or another interaction window while Kennen builds toward its key turn. The mistake is to hold every answer for that one engine piece and let the rest of the board score. The better line is to pressure the lane where the value threat lives and force the Kennen player to spend its replay defensively. If a value engine is only generating cards in the back row, attack the lane where Kennen actually needs the Assault turn.
5. Keep A Late Answer For Ganking Lines
If the game goes long, expect a large Ganking threat that can move into the battlefield that matters and pressure you on attack. That is a different question from the early empowerment turn. Do not spend every late answer on small replay bodies — keep one way to stop the Ganking turn, or make sure your board has an expendable unit where the big threat is likely to attack. If you cannot answer it directly, race the scoreboard before the late threat comes online.
Mulligan Guide Against Kennen
Keep hands that do at least two of these:
- Contest a battlefield on turns one or two.
- Present a threat that still matters after one replayed spell or bounce.
- Hold a flexible answer for the first empowered attacker.
- Pressure a second battlefield so Kennen cannot choose the perfect Assault lane.
- Continue developing after one interaction exchange.
Ship hands that only become functional after the first empowerment turn. A narrow graveyard-hate card with no board is not enough, and a hand full of expensive removal can lose before the first card is ever played from outside the hand.
Turn-By-Turn Counter Plan
Turns 1-2: Claim A Battlefield
Make Kennen react. Your early play does not have to be a perfect answer to the legend; it has to prevent Kennen from getting a free setup turn. If you can make Kennen spend a replay card to preserve a battlefield instead of to build value, that is a win.
Turns 3-4: Track The Empowerment Window
This is the first real checkpoint. Count the cards that can be played from outside the hand, the resources left to convert Kennen's empowered status, and the battlefield where Assault would change combat. Do not attack the lane that gives Kennen the easiest profitable response if a second lane is open — make the opponent choose between scoring and setting up.
Turns 5-6: Break The First Real Score
By now the Kennen player wants one turn where an outside-hand play, a unit worth empowering, and the legend ability all happen together. This is where your flexible answer belongs. A stun, exhaust, bounce, removal, or a movement play that breaks the scoring lane is better than a narrow answer that only makes the deck lose one trigger.
Late Game: Do Not Let Ganking Close The Map
If the game goes long, keep track of any large Ganking threats. Maintain two battlefield questions and preserve one stabilizing answer. Kennen is hardest to beat when you have only one lane left to defend.
What To Build Around
The right counter package is not a universal ten-card list. Search the card database for the cheapest interaction in your own domains that still stops an empowered attack from scoring — stun, exhaust, bounce, movement, and untargeted removal — and for early bodies that contest a battlefield on turns one and two. Then think in roles: two early contest cards, two flexible answers for the empowered attack, two ways to pressure a second battlefield, one late Ganking answer, and the rest fit to your deck's normal curve. Tune those slots against what you actually see, not against a count we cannot independently verify.
Common Mistakes Against Kennen
- Spending removal on the trigger instead of the scoring unit. The outside-hand play may be replaceable; the empowered attack may be the game.
- Blocking without the Assault bonus in the math. A normal-looking attacker can become exactly the size it needs to win.
- Keeping a slow hand. Kennen gets more room to set up when the first battlefield is free.
- Defending one lane only. A second battlefield forces Kennen to choose where the empowered turn matters.
- Overboarding into narrow anti-value cards. If they do not affect the board, they can lose to ordinary units and Ganking pressure.
Build And Test On RiftStorm
Use Riftbound Counters to place Kennen beside the other early Vendetta targets. Build your real deck and a Kennen test shell in the deck builder, then search the card database for the cheapest interaction that still stops an empowered attack from scoring. Run focused games around three questions: can you contest the first battlefield before Kennen gets a free outside-hand play; can your flexible answer stop the empowered attacker without costing your whole turn; and can you keep a second battlefield live through replay and movement pressure? Browse Riftbound decks for public shells, and treat any counter shell you open as a RiftStorm testing shell — a starting point built from card roles, not a tournament decklist.
Bottom Line
Kennen - Heart of the Tempest wins by assembling one decisive turn: an outside-hand play empowers the legend, and that status turns an ordinary attacker into a scoring threat on the lane that matters. Beat it by making that turn happen on your terms — pressure early so the first outside-hand play is defensive, separate the trigger from the scoring unit, count the Assault bonus before you block, and keep a second battlefield live so Kennen never gets the perfect lane. We will update this guide with verified card data once Kennen is in our catalog; until then, the gameplan above holds even as the exact list settles.
