Casting an ability grants a stack of Petricite Burst for 4 seconds, up to 3 stacks. Whilst Sylas has a stack of Petricite Burst, he gains 80% bonus attack speed.

Sylas' next basic attack is modified to whirl his chains around him, dealing 130% attack damage (+25% of ability power) converted into magic damage to his primary target, and 40% attack damage (+20% of ability power) in magic damage to nearby secondary targets.

Damage to secondary targets executes minions below 25 health.

The empowered attack applies on-hit effects to the primary target but disables Sylas' critical strikes' bonus damage. Spell effects only apply to secondary targets.