Sonic Strike IV

Instant action
Cooldown: 3 sec
Cause Physical Damage to a single enemy target with 20% chance to cause Sonic IV state to the target's current opponent. Effect gives Attack Speed, Cast Speed and Movement +4.5%. Stacks up to 5 times and lasts 15 sec.
If target has the "Combo Ready - Intermediate" state then Sonic IV will be used with Movement Speed +15% for 10 sec.
Not high enough level