Sett excels in early-mid lane with strong base stats and powerful W (Haymaker) damage, remaining impactful even when behind using W and his ultimate.
He is, however, highly immobile and vulnerable to kiting. His core resource, 'Grit,' also has systemic issues, frequently decaying during combat or even during his ultimate.
To counter Sett, exploit his lack of mobility with early jungle ganks, maintain distance with movement skills, and prioritize dodging his potent W.