Shen and Zed should have a quest

"Zed killed the previous eye of twilight, and now is out to kill the candidates to succeed Shen."

Conditions: Zed and Shen must be on opposing teams Shens team must have either a ninja or a swordsman, who will be refered to as the "Pupil" Both Zed and the Pupil must have 10 kills.

When the quest triggers, Zed and Shen each have a condition to complete it, with a time limit of 5 minutes.

If Zed can kill the Pupil within the time limit, he wins.

If Shen can protect the pupil, he wins.

Zed winning grants him "Shadow Mastery", which causes his basic shadow slash to apply the same slow that his clone does and causes the damage from multiple Shadow Slashes to stack.

Shen winning grants him "Balance", which causes an additional spirit's refuge to spawn on himself upon casting, and makes it so that triggering Ki Barrier reduces the cooldowns of his basic spells by 2 seconds.