Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
This Sona is not a pusher she is not a soloer she is support only.
Basically for your items buy the items as u see fit.
Early phase you just wanna farm, using Hymn to last hit and harass. Try to save your power chord for when the enemy gets too close, its a lot of damage early and only gets better as you progress. Once you get around 1200 gold go back and pick up shoes and Tear of the Goddess. You will be able to max out your mana pool quickly and when it becomes Archangels you'll get a MAJOR boost.
Just use them and no one dies and everyone is buffed like crazy.
your runes are just your basic runes for anyone gives you nice ap