The Boom and the Bass: ARAM Mayhem Guide
Patch 26.21 ARAM Mayhem guide to The Boom and the Bass: compare Jhin, Fiora, Zaahen and Viego builds, empowered attacks and movement timing.
Patch 26.21: attacks that keep you moving
In Patch 26.21 ARAM Mayhem, 
The Boom and the Bass has a 61.22% overall win rate and S+ rating in Tencent's CN snapshot dated 2026-10-26. Its empowered attack adds damage and movement speed after casting. Here are four champion routes and the timing that makes them work.
Cast, land the empowered attack, reposition
Casting empowers your next attack: it comes out faster and deals bonus magic damage. Land it, then spend the decaying movement speed on chasing or retreating. This is an attack window after a cast, not permanent attack speed. Short cooldowns and frequent ability–attack sequences make it easier to use.
Four champion and item routes
| Champion | Why it fits and how to play |
|---|---|
 Jhin | Temporary attack speed can feed his passive's attack-damage conversion. Use the shot to create space. Keep a crit route with The Collector, Lord Dominik's Regards and Infinity Edge, rather than switching to pure attack speed. |
 Fiora | Q and attack sequences help her chase and reach vitals. Consider Ravenous Hydra, Trinity Force and Death's Dance. Improve ability uptime without giving up the durability needed to stay in range. |
 Zaahen | Movement speed helps him stay close enough to turn stacked passive attack damage into actual hits. Secure a sustained fight, then reposition after empowered attacks; one speed burst is not a safe engage by itself. |
 Viego | Weave attacks between abilities to secure the first takedown and continue through possession. The Collector, Lord Dominik's Regards and Infinity Edge offer a crit option. Add defense when you cannot reliably reach that first reset. |
Convert the proc into useful positioning
Choose a target you can safely hit before casting. After the empowered attack, sidestep a spell or chase an enemy whose dash is down. 
Mystic Punch can support repeated ability use, but you still need hits and enough durability for another rotation. Do not wait for a perfect combination at any cost.
FAQ
Which champions suit The Boom and the Bass?
The Boom and the Bass suits frequent casts followed by attacks, or champions that need movement speed to stay in range. Jhin, Fiora, Zaahen and Viego use it for different reasons. First ask whether you can safely deliver the empowered attack.
Should Jhin switch to attack-speed items?
Jhin does not need a pure attack-speed build just because he has this augment. Temporary attack speed can interact with his passive conversion. Strong shots and spacing remain the goal; choose crit, armor penetration and defense for the enemy lineup.
Can the speed boost stay active permanently?
The movement speed decays. Repeated boosts depend on cooldowns, landing attacks, target distance and enemy crowd control. Casting without delivering the empowered attack is not the same as receiving the full benefit.