Huskar + Magnus

Why this works

Giving Empower to an ally is always helpful, but Huskar can't use the cleave, making him a less-than-ideal target. The bonus damage is nice for his attack speed, but a significant part of the spell's value is lost. Magnus is often looking for a melee core who can fully exploit that cleave to farm faster and hit multiple heroes in teamfights. While Huskar appreciates any damage boost, he doesn't enable Magnus to play his own game as effectively as other partners might. The core of their kits simply doesn't overlap in the most impactful way.

This disconnect continues into their teamfight plans. Magnus excels at setting up kills on clumped-up enemies with Reverse Polarity, a situation tailor-made for a cleaving carry. Huskar, on the other hand, is a single-target hunter, using Life Break to isolate and burst down one specific hero. While a big stun can certainly help Huskar, his inability to damage the other stunned targets makes the setup feel inefficient. Both heroes want to fight, but they want to fight in fundamentally different ways, which can lead to awkward engagements.