Lion + Ursa

Why this works

Picking this pair means committing to a single-target burst strategy. Lion offers a solid chain of disables with Earth Spike and Hex, giving Ursa a stationary target to build Fury Swipes stacks on. This is great in theory for securing kills. The problem is that both heroes are ultimately trying to do the same thing: delete one hero from the fight as quickly as possible. Ursa brings the physical burst and Lion brings the magic burst with Finger of Death. This much focus on a single enemy can be effective, but it's also a bit redundant and leaves your team composition lacking in other areas.

During the laning and mid-game, this duo can be very effective at ganking and getting pick-offs. An Ursa can run at a target, Lion can appear to lock them down, and the kill is usually easy. The combo starts to feel weaker in larger five-on-five teamfights. If the enemy team positions well or has saves to protect the initial target, both Lion and Ursa have effectively used their main tools on one hero to no effect. They lack the area denial or sustained teamfight presence to handle a fight that gets drawn out or spread apart.