Sona Ability (LoL): Song of Celerity

ACTIVE: Sona gains 20% (+2% per 100 ability power) bonus movement speed for 3 seconds, extended to up to 7 seconds if she doesn't take damage.

AURA: Tagged allied champions gain 10 / 11 / 12 / 13 / 14% (+2% per 100 ability power) bonus movement speed for 3 seconds.

POWER CHORD - TEMPO: Power Chord slows its target by 40% (+4% per 100 ability power) for 2 seconds, capped at a maximum of 99%.