As skarner, His early game ganks are decent, but he should be focusing on enemies who are wholly pushed up. This way, she won't have to rely a lot on his CC to win the game.

Level 6 is the kidnapping power spike which will allow Skarner to win games easily. All he needs to do is lock down the highest priority target and get them to his team.

The first item component will allow Skarner to clear his camps quickly as well as increase his chances of winning 1v1s with the enemy Jungler.
 As skarner, His first games are decent, but he should focus on the enemies who are quite pushed up. This way, she won't have to rely much on her CC to win the game. Level 6 is the pick of power removal that will allow Skarner to win games easily. All he needs to do is lock the highest priority target and bring them to his team.