W and E proc the bonus. If you steal a dash ultimate, R also procs it afterwards.
Submitted by ARAMMayhem.com
About Sylas
About Dashing
Dashing
prismatic 50.63% WR
Kalista is granted 125% bonus attack speed instead.
All Sylas combos
View all Sylas combos → 5 combos
More Dashing Combos
Kayn S Q, E, and R all benefit from the bonus. 
Aurora S W, E, and R all benefit from Dashing. 
Kalista S Dashing gives Kalista a massive attack speed boost. 
Briar S Q, W, and R all proc Dashing. 
Elise S In spider form after dying, Q and E gain 175 ability haste each death. Three deaths maxes out 500 haste — human form benefits too. Swapping via Pandora's Box keeps the haste! 
Fizz S Q and E both reduce cooldowns. 
Qiyana S Stack the Archmage hex, then loop Qiyana W (resets Q + adds an element) with Archmage's CDR returns for infinite QW combos. At 100+ ability haste it becomes a perfect cycle — endless dashes, stealth, or CC. Manamune is critical since infinite QW drains mana fast. 
Irelia S Around 300 ability haste plus Mystic Punch enables infinite Q. Keep exploring
Sylas + Dashing ARAM: Mayhem Combo Guide
This S-tier combo pairs Sylas with Dashing in ARAM: Mayhem. This is one of the strongest combos available — pick it whenever you can.
W and E proc the bonus. If you steal a dash ultimate, R also procs it afterwards.