Ruby

In teamfights, use Ruby's 1st Skill to slow the enemy at a distance, and close in with her Passive dash. Then use her 2nd Skill to stun the enemies in range and use her Ultimate to pull back those who try to escape.

In the laning phase, Use Ruby's 1st Skill to slow down the enemy, and the dash from her Passive to get closer. Then cast Ruby's Ultimate to pull the enemy into melee range and her 2nd Skill to keep them stunned. Finally, spam her Basic Attacks to finish them off.