(Innate): After casting 3 spells, Sona's next attack deals an extra 8 + (10 × level) magic damage in addition to a bonus effect depending on which ability was cast last.
Additionally, Sona's Auras persist for 1 second after deactivating and set off a 0.5 second global cooldown.
Power Chord is a passive ability that gains 1 stack whenever Sona uses an ability. Upon reaching 3 stacks, Sona's next autoattack will deal bonus magic damage and have an additional effect depending on which ability she used last. Additionally, changing auras will set off a 0.5 second global cooldown.
Power Chord will damage Black Shield and the debuffs will be negated.
When Power Chord is ready, Sona gains a ring around her. This ring will have a different color depending on the last ability used (blue, green or purple). The effect does not change if abilities are used while the projectile is in motion.
If Power Chord reaches its third charge using Crescendo, its effect will be that of the active aura at that time, or that of whichever ability Sona uses thereafter.
If no song is playing when Power Chord is ready, it will have no effect and the buff is consumed after the next autoattack.
The global cooldown triggered by changing auras will not affect Crescendo.
Sona's auras will only affect allied champions, not minions or pets.
Attacks enhanced by Power Chord can be blocked or parried. An example can be seen here.
Attacks enhanced by Power Chord can not be dodged by Jax'sCounter Strike, and will proc the 25% less damage from AoE portion of the spell.
(Power Chord) – Diminuendo: Reduces the target's total damage output by 20% for 4 seconds.
Aria of Perseverance, when activated, is a proximity self-targeting ability that heals Sona and the closest allied champion with the lowest health percentage, granting herself and the healed target bonus armor and magic resistance for 3 seconds. Aria of Perseverance's persistent aura increases all nearby allied champions' armor and magic resistance.
Aria of Perseverance's aura and its active are immediately activated upon cast.
Aria of Perseverance's aura and its active bonuses stack with each other.
Aria of Perseverance can heal stealthed ally champions without revealing them. However, the projectile will travel to them, showing their position upon cast.
Aria of Perseverance will prioritize the closest allied champion with the highest percentage of missing health.
If no one is injured, Aria of Perseverance will target the closest allied champion.