Muerta + Necrophos

Why this works

Drafting these heroes together seems like a way to guarantee kills, but their goals can overlap in unhelpful ways. Both Muerta and Necrophos excel at finishing off a weakened enemy. A target low enough to be a good candidate for Reaper's Scythe is also a target Muerta can easily burst down, especially during Pierce the Veil. Instead of one hero setting up a kill for the other, they often end up competing for the same final blow. This redundancy means you have two major cooldowns solving the same problem, which can leave your team vulnerable in other areas, like initiation or crowd control.

As the game progresses, this lack of synergy becomes more apparent. Opponents will prioritize items that mitigate magical damage, weakening both Necrophos and an ulting Muerta at the same time. In teamfights, the ideal scenario is for one hero's ultimate to enable the other, but it's often clunky. A more common outcome is one ultimate being used to secure a kill that the other hero could have gotten anyway, effectively wasting a powerful ability. For this pairing to work, they need careful coordination to avoid stepping on each other's toes when choosing targets.