Against sona, Catching Sona out when she goes to ward will allow your team to potentially allow you to take the Baron, Dragon or start a team fight when she is unable to protect her team.

Avoid team fighting in areas where you’re forced to group close together like inside an objective pit or in the jungle. This will allow Sona to get a multiperson Ultimate R. Try and group but not too close together.

In team fights, Sona will be stood next to her ADC. This might make it difficult for you to kill her. Not to worry, you could flank in team fights to make killing her or her ADC easier. Against sona, Catching Sona when she goes to the hall will allow your team to potentially allow you to take the Baron, Dragon or start a team fight when she is unable to protect her team. Avoid team fights in areas where you are forced to group together as inside an objective pit or in the jungle. This will allow Sona to get a multi-person Ultimate R. Try and group but not too closely together. In team fights, Sona will be standing next to her ADC. This could make it difficult for you to kill her.