With the release of the controversial champion, Seraphine, her musical predecessor, Sona, has fallen to the wayside. Riot, it would appear, is trying to rectify this problem, to an extent, that is.
Sona is Demacia's foremost virtuoso of the stringed etwahl, speaking only through her graceful chords and vibrant arias. This genteel manner has endeared her to the highborn, though others suspect her spellbinding melodies to actually emanate magic—a Demacian taboo. Silent to outsiders but somehow understood by close companions, Sona plucks her harmonies not only to soothe injured allies but also to strike down unsuspecting enemies.
Her abilities are:
Hymn of Valor - an attack buff,
Aria of Perseverance - a healing buff,
Song of celerity - a movement speed buff,
Crescendo - a crowd control heavy ultimate, that stuns all targets in its cone.
As an old champion, all these abilities are as basic as they get, with good Sona players knowing where and when to position, and how to weave in and out of team fights.
As Kevin Huang, one of the game designers updates us, now, when Sona damages enemy champions with Q - Hymn of Valor or uses W - Aria of Perseverance to heal an injured ally or protect them from damage with the shield (the full base value; a tiny bit of ambient damage won't count), she will permanently gain a stack of Accelerando, granting ability haste for her basic abilities (up to a cap). Striking two different champions with Q will grant two stacks, and W can grant up to 5 stacks if it heals an ally and blocks damage on all four allies. This new passive rewards Sona for using Q and W well in a duo lane, rather than penalizing her as the mana refund did.
After the cap is reached, the Crescendo cooldown is shortened with each stack.
The goal of this update seems to be rewarding more aggressive Sona ultimates and gearing Sona towards solo lanes more. However, this meta was a gimmicky one, that lasted for a bit of time, and it is uncertain whether this is enough to put Sona even close to Riot's favorite child, Seraphine.