Hymn of Valor - Sona plays the Hymn of Valor, granting nearby allied champions bonus Damage and Ability Power. Additionally, casting this ability sends out bolts of sound, dealing magic damage to the nearest two enemy champions or monsters.
Persistent Aura: Sona plays the Hymn of Valor, increasing nearby allied champions Damage and Ability Power by 8/11/14/17/20.
Activation: Sona fires bolts of sound, dealing 70/120/170/220/270 (+0.6) magic damage to the nearest two enemies (prioritizes champions).
Aria of Perseverance - Sona plays the Aria of Perseverance, granting nearby allied champions bonus Armor and Magic Resist. Additionally, casting this ability sends out healing melodies, healing Sona and a nearby wounded ally.
Persistent Aura: Sona plays the Aria of Perseverance, increasing nearby allied champions Armor and Magic Resist by 8/11/14/17/20.
Activation: Sona sends out healing melodies, healing Sona and the most wounded nearby allied champion by 40/65/90/115/140 (+0.5).
Song of Celerity - Sona plays the Song of Celerity, granting nearby allied champions bonus Movement Speed. Additionally, casting this ability energizes nearby allies with a burst of speed.
Persistent Aura: Sona plays the Song of Celerity, granting nearby allied champions 8/11/14/17/20 bonus Movement Speed.
Activation: Sona energizes nearby allies, granting them 8/11/13/17/20% Movement Speed for 1.5 seconds.
Crescendo - Sona plays her ultimate chord, forcing enemy champions to dance, taking magic damage over time.
Sona plays her ultimate chord, forcing enemy champions in a line in front of her to dance, taking 150/250/350 (+0.7) magic damage over 1.5 seconds.
Power Chord - After casting 3 spells, Sona's next attack deals 24 + 12 x lvl bonus magic damage.
Additionally, Sona's Auras persist for 3 seconds after deactivating and set off a 2 second global cooldown.
HEAL : I chose Heal because it can save your lane partner and save your *** when you are alone.
CLARITY : Same as above.
DO NOT SOLO MID, GO WITH AN ASSASSIN OR A TANK
Spam your Q spell to harass get to level 2 as fast as possible for the heal ability. Get ToG first because you will be able to spam your spells even more while getting mana. This will help mid and late game. Try to save your ultimate for ganks top or bottom. Also, having the mana buff helps alot at early game because of the cooldown reduction and fast regeneration of your mana.
TIP : Don't try to act like a carry because Sona is not made for that
You should now have some ability power, after getting Archangel staff, you should go toward making RcS for the slow passive, works great in team fights because Sona first ability can attack up to two champions. If you are not getting killed you should maybe think of getting Mejai's soul stealer.
You should always have the mana buff so you can abuse your heal spell and attack spell.
Use your ultimate when the other team champions are falling back and demolish them.
So far with this build I have gotten a win/loose ration of about 5