Hanabi

In teamfights, start with Hanabi's 2nd Skill to slow the enemies, then follow up with her Ultimate to immobilize them and let loose with Basic Attacks. During this time, use her 1st Skill accordingly for more damage and survivability, and keep up the damage with her bouncing Basic Attacks.

In the laning phase, use Hanabi's 2nd Skill to poke the enemy and mark them, and continue to chip away their HP with Basic Attack bounces before using her 1st Skill and engaging them head-on.