Maximize Sona's mid-late game potential by securing Ability Power and Ability Haste through scaling runes (like Versatility) and core support items such as Helia and Ardent Censer.
Sona is vulnerable in the early game and challenging in lower elos; focus on safe scaling to unlock her powerful late-game carry potential.
Recent item changes have improved her viability, but it's best to pick her strategically, considering team composition and synergy.