As shen, His early game ganks are pretty solid as he can CC pushed up targets with ease. That being said, ganking allies with hard CC is always preferable for Shen.

Level 6 is a massive power spike for Shen. It is also a free gank/roam ticket for him as he can immediately show up to a lane and catch the enemy off-guard.

The first item component will allow him to deal more damage and bolster his overall survivability. It will let him clear his camps quickly as well.         As shen, His first game ganks are quite solid because he can push CC targets with ease. That being said, the allied ganking with hard CC is always preferable for Shen. Level 6 is a massive power peak for Shen. It is also a free gank/roam ticket for him because he can immediately show up to a track and catch the out-of-guard enemy. The first element will allow him to inflict more damage and strengthen his overall survival. He will also allow him to clean his camps quickly.