Gusion

In teamfights, Gusion should first use his 2nd Skill for damage, then his Ultimate to reset the cooldown for his 2nd Skill. Follow up with his 2nd and 1st Skill combo for more damage. And use his 2nd Skill again to recall all 10 daggers right after moving behind a target with his 1st Skill for massive damage. He can then finish off any remaining low-HP heroes and escape with his Ultimate.

In the laning phase, Gusion can use his 1st Skill to mark the enemies, then use his 2nd Skill to slow them down. Next, he can use his 1st Skill again to move behind a target enemy and use his 2nd Skill again to deal massive damage. And finally, use his Basic Attacks to finish off the target.