Juggernaut + Legion Commander

Why this works

Trying to survive a gank from this pair feels hopeless. Legion Commander's Duel provides the perfect lockdown, holding a single target completely still for Juggernaut to follow up. An Omnislash on a Dueled hero is almost always a kill, as the target can't move or use items to escape. Legion Commander can also cast Press the Attack on Juggernaut, dispelling slows or stuns and giving him a massive attack speed boost. Even Juggernaut’s Healing Ward is incredible here; it can be placed next to the Duel to heal Legion Commander without any risk of being destroyed by the locked-down opponent.

This pressure begins the moment Legion Commander finds her Blink Dagger. Any lone enemy hero becomes a free Duel damage victory and an easy kill. This forces opponents to play defensively and group up, which in turn gives Juggernaut the space he needs to farm and become a true late-game threat. The constant fear of having a core hero instantly deleted from the map by the Duel and Omnislash combination often paralyzes the enemy team's strategy. This allows Juggernaut and Legion Commander to control the tempo of the entire mid-game and build a decisive lead.