An 8-player match with random decks, cards shared by everyone and 4★ Minions. Here are the official rules, the 6 synergies and the mode's Sun and shop tables.
Pick one deck and buy only from it: synergy points add up per deck.
wikiCount in points: 1★ is worth 1, 2★ is 2 and 3★ is 4. Below, the path for each deck.
Point goals: 4 → 1 · 12 → 4 · 25 → 13 · 50 → 50
Point goals: 4 → 4% · 12 → 12% · 25 → 30% · 50 → 65%
Point goals: 4 → 1 · 12 → 3 · 25 → 8 · 50 → 30
Point goals: 4 → 1 · 12 → 5 · 25 → 16 · 50 → 60
Point goals: 4 → 5 · 12 → 20 · 25 → 60 · 50 → 200
Point goals: 4 → 1 · 12 → 4 · 25 → 12 · 50 → 40
You face 7 other players in random matchups. Anyone who hits 0 HP is eliminated on the spot, and placement follows the elimination order. The higher you place, the more Rumble Trophies and Medals you earn.
Rumble Trophies raise your rank in the mode and unlock the Rumble Track. Medals unlock the Rumble Pass. Both reset every season.
Each season has 6 decks, and every match draws 3 of them. Everyone buys from the cards in those 3 decks, and you can check the match's decks during the battle.
Each card has a limited number of copies shared by all 8 players. Once it runs out, nobody can buy it. A sold card goes back to the pool, and an eliminated player returns every card they bought.
You can use any card in the decks, even ones you haven't unlocked yet. Your card levels carry over to the mode, and some new cards come with a guaranteed minimum level.
Two 3★ Minions merge into a 4★ Minion, which only exists in this mode. According to the game, a cost 5 4★ is much stronger than a cost 3 one, and a cost 8 4★ turns the match around.
When your Attack Units hit the enemy Captain, the HP they lose drops on the field. If you survive the round, your Captain absorbs that HP. It doesn't count:
officialIn-game wiki, pages 30 to 34: rules, decks, 4★, HP absorption and synergies.
Each deck has its own synergy. Buying Minions from the same deck adds Synergy Points for that deck, and each points threshold turns on a stronger effect. Selling a Minion on the field removes its points.
wikiPoints per Minion: 1★ = 1 and 3★ = 4 (game text). By the same math, 2★ = 2 and 4★ = 8: it's the number of 1★ copies that make the card.
confirmedThe cards in all 6 decks come from in-game screenshots of November 4, 2026. The I or II tag means the mode uses that Variant. If the decks change next season, send a screenshot through the Feedback tab.
Increases the ATK of Minions in the Shop by 1/2/4/6/9/13/18/25/35/50.
Cloud Captain Cloud Synergy +8
Enemies lose 4%/8%/12%/18%/24%/30%/38%/46%/54%/65% HP upon entering the field.
Moon Captain Moon Synergy +8
Ready: Grants 1/2/3/4/6/8/11/15/20/30 Suncoins.
Sun Captain Sun Synergy +8
Aura: Increases all Minions' ATK by 1/3/5/8/12/16/22/30/40/60.
Thunder Captain Lightning Synergy +8
Ready: Increases the ATK of the Minion with the highest ATK by 5/10/20/30/45/60/80/100/130/200.
Droplet Captain Droplet Synergy +8
Ready: Increases all Minions' ATK by 1/2/4/6/9/12/16/20/26/40.
Star Captain Star Synergy +8
The same 6 effects side by side at four tiers. Use it to pick a deck by the size of its bonus, not just by the card you like.
| Synergy | 4 points | 12 points | 25 points | 50 points |
|---|---|---|---|---|
| Cloud Synergy | 1 | 4 | 13 | 50 |
| Moon Synergy | 4% | 12% | 30% | 65% |
| Sun Synergy | 1 | 3 | 8 | 30 |
| Lightning Synergy | 1 | 5 | 16 | 60 |
| Droplet Synergy | 5 | 20 | 60 | 200 |
| Star Synergy | 1 | 4 | 12 | 40 |
confirmedNumbers from the in-game screenshots of November 4, 2026. Each column's effect is the one described on that synergy's card, just below.
Tips by experience level. The tag on each one shows whether it comes from official text, a game screenshot or my own math on the numbers.
Your first matches in the mode.
You already finish 3★ cards and want a better placement.
You play for the top of the table and read other players' stock.
You get more Sun here than in Ranked. The Sun column comes from the game files and matches what shows in round 1 (15).
confirmedShop odds seen in game: round 1 only shows cost 3 (100%). In round 2 it's 90% cost 3 and 10% cost 5. Later rounds haven't been checked yet.
confirmedStock seen in round 1: each cost 5 card had 14 copies and each cost 8 card had 10. Cost 3 cards went up to 20 (some had already been bought).
officialIn a match, the card details screen has a Rumble Emblem tab listing this mode's Captains. Each one changes a rule of the match. The 6 synergy Captains (Cloud, Moon, Sun, Thunder, Droplet and Star) give +8 Synergy Points to their deck.
+4 Suncoins when unlocking tiles.
When taking lethal damage, the Captain becomes invincible for that round and is healed to 25% HP.
Ready: Summons a Temp clone of a random 4★ Minion that inherits 50% ATK.
Purchasing a Minion or refreshing the Shop changes prices by a random value from -2 to +2.
Sells the selected Minion and gives 120% of its ATK to another Minion (can only be used once per round).
Grants 15 Suncoins.
At the start of each round, gain 1 Suncoins for every 3★ Minion and 2 for every 4★ one.
ATK +8% whenever a Minion is promoted.
Grants 3 random 8-Cost Minions (Sleep) at the start of the match.
Round Start: Destroys the highest ATK Minion on the field, and grants 75% of its ATK to 2 random Minions.
Increases the Captain's max HP by 150 and HP by 100.
Ready: Minions in the Shop gain ATK +2.
Grants 3 free shop refreshes each round.
Stuns all enemy Minions for 5 sec at the start of battle.
Ready: The Minions with the lowest and highest ATK Temp gain 40% of each other's ATK.
Grants 8 Suncoins whenever a Minion is promoted to 4★.
Whenever you purchase a Minion or refresh the Shop, a random Minion in the Shop gains ATK +25%–100%.
Minions in the Shop Temp gain ATK +1 each time you spend Suncoins.
Match Start: Grants 1 3★ Starry Starfruits.
The first Minion you place each round gains ATK +100%.
Allied Rush Squad Units gain 200% Move SPD for 2.50 sec on entering the field (half duration on bosses).
Ready: Summons 1 1★ Arti Egg.
Increases the ATK SPD of all Minions by 25%.
Increases the Shield value of summoned Rush Squad Units by +1, or by +2 if the enemy has more total ATK than you.
Ready: Balances the ATK of all Minions, and then increases their ATK by 6%.
Reduces the Purchase Price of 8-Cost Minions by 4.
Ready: Increases the ATK of Minions by 2 (1 duplicate per unique Minion). Each unlocked tile increases the potency by 1.
Ready: Grants 1 Suncoin for every 8 Suncoins you have.
Unlocks all tiles at match start. However, the cost of Minions increases by 2 and refreshes by 1.
At the start of Boss rounds, refreshes the Shop with 2 Demon Sprouts that can Temp copy selected Minions.
Ready: Summons a random Minion that you already have.
The first Minion purchased each round is free.
Round Start: Reduces the unlock price of tiles by another 4.
Increases the ATK SPD of the highest-ATK Minion by +50%.
Ready: Temp promotes your 4 Minions with the lowest ★ rank by +1★ (triggers first immediately on Ready).
Ready: Increases the ATK of all Minions by +10% (both allies and enemies).
Each time you purchase a Minion, other Minions of this type in the Shop gain ATK equal to the Minion's purchase price.
Reduces the purchase price of Minions by -33%. But you can only purchase 2 of each Minion type per round.
When all tiles are unlocked, summons an 8-Cost Minion of 1★ to 2★ on every empty tile on the field.
Your Minions Temp gain ATK SPD +4% whenever they attack.
Every Minion you sell grants extra Suncoins equal to its ★ rank on the next round.
Each time you spend Suncoins, 1 random Minions gain ATK equal to 100% of the Suncoins you spent.
Increases the ★ rank of summoned Temp Minions by +1.
Ready: If all Minions are of the same ★ rank, Temp grants all other Minions ATK equal to 100% of the ATK of the lowest-ATK Minion.
Grants 1 Suncoins whenever a Minion is promoted.
Reduces the purchase price of Minions by -1. But tile unlocks no longer drop in cost as the match progresses.
For every 3% Total ATK you have more than the enemy, your Rush Squad Units gain Move SPD +1% (does not work against bosses). For every 3% Total ATK the enemy has more than you, your Minions gain ATK SPD +1%.
Ready: Temp demotes all enemy Minions by -1 (triggers first immediately on Ready).
Round Start: Refreshes the Shop with up to 2 Minions that you already have fielded.
If you don't take any damage this round, gain clones of 1 random enemy Minions. If your field is full, your 1 Minions with the least ATK instead turn into random enemy Minions.
Cloud Synergy +8
Moon Synergy +8
Sun Synergy +8
Lightning Synergy +8
Droplet Synergy +8
Star Synergy +8
officialIn ability text, the last number in the sequence is the 4★ value. In "2/4/8/20", for example, 4★ gives 20. Each card page shows the full official text.
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