Obsidia

During teamfights, use Obsidia's Basic Attacks and 1st Skill to poke the enemy, and her 2nd Skill to reposition herself. Look for opportunities to close in on a target with her Ultimate and pick them off with your team. Finally, use her mobility and powerful Basic Attacks to clean up the remaining enemies.

During the laning phase, use Obsidia's 1st Skill often on enemy Minions and heroes to quickly stack her Passive. When the enemy's HP drops low enough, use Obsidia's 2nd Skill and Ultimate on them and finish them off with Basic Attacks.