Juggernaut + Timbersaw

Why this works

Picking two cores who seem independently strong can feel like a good idea, but the reality is that Juggernaut and Timbersaw actively work against each other's goals in a fight. Timbersaw wants the enemy team to clump up on him so he can hit multiple heroes with his spells and survive. He thrives in messy, sustained brawls. Juggernaut, however, is at his most lethal when he can isolate a target for Omnislash. When Timbersaw dives in and creates a chaotic scrum, it denies Juggernaut the clean, separated targets he needs to get a kill with his ultimate. Their ideal teamfight scenarios are opposites.

As the game progresses, this disconnect becomes more obvious. Timbersaw will be creating space and drawing attention, but he offers none of the hard lockdown that helps Juggernaut secure kills during Blade Fury or set up an Omnislash. Juggernaut is often left waiting for an opportunity that never comes, while Timbersaw is trying to solo the entire enemy team without the follow-up burst damage to finish anyone off. Both heroes end up wanting to be the center of attention, but they don't enable each other, leading to disjointed fights where neither hero can play to their strengths.