Lina + Ursa

Why this works

Pairing these two looks like a simple kill setup on paper, but the reality is much clunkier. Ursa needs immediate, reliable lockdown to get on a target and stay there, which is something Lina's delayed Light Strike Array simply can't guarantee. An aware opponent can often react and create space before the stun lands, leaving Ursa with his Overpower active but no one to hit. Both heroes are also specialists at deleting a single target, so they end up competing for the same job. This overlap means they don't really enable each other; they're more likely to overkill one hero while the rest of the enemy team escapes.

As the game progresses, this lack of synergy becomes a resource problem. Ursa and Lina both function as cores who want a lot of farm to hit their timings, often starving the rest of the team. In fights, they provide very little for each other defensively. If Lina gets initiated on, Ursa has no way to save her. If Ursa is getting kited, Lina’s slow-to-land stun isn't a great peel. This forces the other three heroes to carry the immense burden of providing all the reliable crowd control, initiation, and defensive utility the team needs to function.