As lissandra, At level 9, Lissandra's Q will be maxed out. This means that she will be dealing tons of damage now, especially in grouped fights.

Lissandra is really good in team fights. She can easily CC high priority targets and single-handedly win a team fight due to her AoE abilities and Passive.

Her Ultimate R at level 11 will provide her with a lot of pick potential. She can use that ability frequently, which means that team fights and picks will be pretty frequent. As lissandra, At level 9, the Lissandra Q will be maximized. This means that it will do tons of damage now, especially in the grouped combats. Lissandra is really good in the team fights. She can easily CC high priority targets and win a team fight alone due to her AoE and Passive abilities. Her Ultimate R at level 11 will provide her with a lot of selection potential. She can use this ability frequently, which means that team fights and choices will be quite frequent.