Wolf Nachi is a support with a straightforward attack-buff identity focused on enabling one ally's damage window. He is mostly a transitional unit for early progression, his utility is narrower than modern support options.
Wolfpack Clustering provides a short but useful offensive boost to a teammate, making him a simple tempo helper for beginner teams built around one main carry. His awakened finisher can trigger a teamwide Clustering effect if he secures a kill, and at level 5 it costs no energy, which creates occasional high-value turns in low-power fights. The main issue is consistency: he needs favorable kill conditions to unlock his best value, and outside that scenario his impact is limited to modest single-target buffing.
Overall, Nachi is a budget support pick that can work in very early rosters where any extra damage amplification helps. Long term, he is outclassed by many buffers and controllers that offer stronger, more reliable utility.