Faceless Void + Juggernaut

Why this works

Picking both of these heroes puts your team in a difficult position from the draft. Faceless Void and Juggernaut are both hard carries at heart, meaning they need a ton of gold and experience to be effective. When they're on the same team, they inevitably compete for farming space on the map. One of them is forced into a role they're not ideal for, usually resulting in an under-farmed Faceless Void who can't deal enough damage inside his own Chronosphere. The core problem is that both heroes want to do the same job, and there aren't enough resources for both to succeed.

This creates a very greedy lineup that struggles to control the early and mid-game. Your team will often lack the initiation or utility that a standard offlaner provides. While the combination of Chronosphere and Omnislash sounds powerful, it requires both heroes to have items, and they actively slow each other down from getting there. Even if the combo does come online, you're committing two massive carry ultimates for one play. If the enemy team has a single save, the fight can swing against you hard, as both of your cores are left with nothing for a long time.