Not Updated For Current Season
After 3 spells, Sona's next auto-attack does a flat amount of extra damage based on her level (12 + 24/level). Pay attention to the Power Chord buff (see next section, "Power Chord"), and when it's ready-- that's the perfect time to surprise your enemy with a quick Hymn of Valor + Power Chord combo.
Tip: Cast Hymn of Valor twice in the well so that after your first Q against the enemy champions, your next auto-attack will apply Power Chord for a little extra damage. It could be just enough to net you first blood instead of first death.
Hymn of Valor
Sona's nuke, and a persistent offensive buff for the team. This spell is surprisingly powerful early game, and gets less and less impressive as the game goes on. Still, it's a reliable source of damage and is awesome for hitting champions when they don't expect it. Tip: Train and cast this as soon as you load into the game to activate the aura so it will apply when/if you go for first blood. Buy items while it's on cooldown, then cast it again before you start running to your lane to put you another tick closer to Power Chord.
Details: 7 Second Cooldown. Passive aura adds 8/11/14/17/20 Damage and Ability Power (not increased by your AP). Active deals 70/120/170/220/270 magic damage (+ 0.6 per point of AP) to the nearest two enemy units, prioritizing champions.
Aria of Perseverance
A decent healing spell. It heals yourself and the lowest-health nearby ally. It also buffs your team with Armor and Magic Resist, which persists for 3 seconds after switching to Song of Celerity, a combo you'll be doing often to save your teammates.
Details: 7 Second Cooldown. Passive aura adds 8/11/14/17/20 Armor and Magic Resist (not increased by AP). Active heals Sona and the lowest-health nearby champion for 40/65/90/115/140 (+ 0.5 per point of AP).
Song of Celerity
A speed boost similar to Udyr's Bear Stance, but applied to your allies as well (this includes minions)! Great for chasing, escaping, sneaking in last hits, and harassing. This spell is your low-cooldown mini-Ghost. The passive speed buff is fairly small, but it's enough to put you ahead of an enemy with the same tier boots.
Details: 7 Second Cooldown. Passive aura adds 8/11/14/17/20 Movement Speed (not increased by your AP). Active grants Sona and all nearby allies (including minions) 8/11/13/17/20% Movement Speed for 1.5 seconds (not increased by AP).
A loud, flashy skillshot that does damage and briefly incapacitates enemies in a wide, long, straight line. Save this for team fights, cause it is incredible. Plus, they dance.
Details: 160/140/120 Second Cooldown.Deals 150/250/350 (+ 0.7 per point of AP) magic damage over 1.5 seconds. Targets are completely disabled for the duration of the spell, but it is not suppression and therefore is effected by things like Mercury's Treads and Cleanse.
Sorry dudes but dont describe this build cause i can't write in english.
Any question to build please write on comments.