Monkey King + Queen of Pain

Why this works

Picking these two heroes together feels like a plan for map-wide aggression, but their kits actively work against each other. Monkey King needs enemies held in place for Wukong's Command to be effective. Queen of Pain provides a huge amount of initial burst, but her goal is to eliminate a single target and then reposition with Blink. She doesn't offer the sustained, area-of-effect control Monkey King needs to do his job, and his lockdown doesn't do much to set up her damage either. Their initiation styles are fundamentally incompatible.

This leads to messy teamfights where their timings are misaligned. Monkey King will commit his ultimate, but Queen of Pain has often already used her spells on a priority target on the edge of the fight or will simply Blink away to safety, leaving him alone. Since they both want to play a similar core role and farm similar parts of the map, they can starve each other for resources. This creates a mid-game where neither hero is as strong as they need to be, and the enemy can exploit their lack of coordinated control.