Kennen

Kennen is a mid lane mage who runs on energy, and his whole kit is built around Mark of the Storm. Each ability he hits leaves a mark on the target, and an enemy carrying three marks gets stunned. Since his resource is energy instead of mana, he rarely runs dry during laning phase, so he can keep trading with Thundering Shuriken, a quick skillshot that deals damage and applies marks at once.

Electrical Surge pushes the marking further. Its passive adds a mark after a handful of basic attacks, and when activated it shocks any enemy already marked, bringing their stun closer. Lightning Rush transforms Kennen into a streak of living lightning that moves through units, placing another mark on each unit it touches, while giving him bonus move speed when it begins and attack speed when it ends. Taken together, he can build his own crowd control without owning a conventional hard-CC ability.

Teamfight identity

Slicing Maelstrom is the point where the whole kit clicks. Kennen charges into a grouped enemy team, and the storm keeps striking nearby champions, spreading marks across all of them simultaneously. A well-timed ultimate can chain stuns on three or four opponents in a row. Rated 4 out of 10 for difficulty, he appeals to players who want fight-winning impact and constant lane pressure without a particularly demanding kit. The catch is that he is fragile: committing to a dive with Lightning Rush locks him in, so good timing and smart target choice determine whether he takes over the fight or dies in the middle of it.