Yi Sun-shin

In teamfights, start with Yi Sun-shin's Ultimate, then use his enhanced 1st Skill to send his Turtle Ship into the enemy to stun them. Follow up with ranged Basic Attacks, then use his 1st Skill to get close and perform 2 enhanced Basic Attacks. Tap his 2nd Skill to perform another slash, and secure the kill with 2 more enhanced Basic Attacks.

In the laning phase, Yi Sun-shin should use his enhanced Basic Attacks from a distance, then close in with his 1st Skill and slash the enemy with two enhanced Basic Attacks. Follow up with a slash from his 2nd Skill and finish with 2 more enhanced Basic Attacks.