It is now easier to tell new and experienced Sonas apart.
The aura duration nerf when tagging allies is actually really important since she was basically getting a double ability cast via tagging an ally.
Once they balance her properly it should be fine.
They drained aura duration in order to make Sona less watered down.
Here are all changes compared to her pre V6.14 kit:
Buffs:
-Aura radius increased to 400 from 350.
-Power Chord damage increased to 15 - 235 (based on level) from 13 - 192 (based on level).
-Aria of Perseverance base heal increased to 35 / 55 / 75 / 95 / 115 from 30 / 50 / 70 / 90 / 110.
-Heal AP ratio increased to 25% AP from 20% AP.
-Base shield health increased to 30 / 55 / 80 / 105 / 130 from 35 / 55 / 75 / 95 / 115.
-Shield AP ratio increased to 30% AP from 20% AP.
-Diminuendo target now deals 25% less damage for 3 seconds, up from 20%.
-Diminuendo AP scaling increased to 4% AP per 100 AP from 2% AP per 100 AP.
-Song of Celerity active self movement speed duration no longer decays over the duration of the 3 seconds (stays up to 7 seconds if Sona is out of combat)
-Aura movement speed AP ratio increased to 6% per 100 AP from 4% per 100 AP.
-Aura movement speed duration increased to 3 seconds from 1.5.
-Crescendo: NEW EFFECT: Grants 20 / 30 / 40% base cooldown reduction on basic abilities. Stacks multiplicatively with cooldown reduction.
Nerfs:
-Aura duration no longer extends for up to 2 seconds when affecting allies.
-Hymn of Valor Q base damage reduced to 40 / 70 / 100 / 130 / 160 from 40 / 80 / 120 / 160 / 200.
-Aria of Perseverance: REMOVED: Increased healing based on missing health.
REMOVED:Crescendo rank no longer increases potency of basic abilities.
Neutral:
NEW EFFECT: Diminuendo Now shrinks targets for duration of debuff.
Bugs:
BUG FIX: Fixed a bug where Aria of Perseverance could be cast instantly after Song of Celerity, rather than being gated behind Sona's brief "global cooldown" after casting a basic ability. V6.14 July 20th Hotfix