Invoker + Warlock

Why this works

Thinking about the big Chaotic Offering into Meteor combo is natural, but that's not always the core of their strength. Relying on two huge ultimates for a single play can be risky, especially if the enemy has a way to disengage or survive the initial burst. The more consistent value comes from Warlock's other abilities. Fatal Bonds amplifies the damage from any of Invoker's area-of-effect spells, like Meteor or Deafening Blast, across multiple targets. Upheaval also provides an excellent, long-lasting slow that gives Invoker all the time he needs to line up his spells perfectly.

The game plan for this pair revolves around five-man teamfights. When Warlock and Invoker get to execute their spell sequence on their own terms, they can be incredibly effective at controlling and damaging the entire enemy team. The issue is that both heroes are prime targets and lack reliable escapes. Teams with strong gap-close and single-target burst can often pick off Warlock before he can cast his ultimate or pressure Invoker so he can't get his spells off cleanly. The result is a fight that either goes perfectly for them or falls apart completely.