Dark Willow + Ursa

Why this works

Picking these two heroes together often creates a conflict over how kills are secured. Ursa needs to stick to a single target to build up damage and finish them off quickly. Dark Willow's kit, especially Terrorize, does the opposite by scattering enemies and forcing them to run away. This can push Ursa's target out of his reach right as he's committing his Overpower charges. Even her Cursed Crown has a delay, which can feel too slow for Ursa's immediate kill threat. The control from both heroes simply doesn't align on the same goal.

In a real game, this means early ganks can feel awkward and teamfights become chaotic. The Ursa player will often find themselves blinking on a priority hero, only for Terrorize to send that hero running to safety. This forces Ursa to chase, wasting valuable time and letting enemies reposition. To make it work, the Dark Willow has to be extremely careful with her ultimate, perhaps only using it defensively. Otherwise, Ursa is left without the focused lockdown he needs to take over the mid-game, and the enemy team can easily kite and separate them.