Underlord + Puck

Why this works

Setting up for a kill with this pair can feel a little awkward. The main issue is that their control spells work against each other's goals. Underlord's Pit of Malice roots enemies in place, encouraging them to stand still and wait it out. A hero who isn't moving has no reason to break Puck's Dream Coil, which lessens the ultimate's threat and removes the secondary stun. While both heroes bring a lot of area denial and magical damage, their abilities don't stack effectively. Enemies caught in both a Pit and a Coil are often no worse off than if they were caught in just one, leading to redundant crowd control.

This disconnect plays out across the game. Underlord wants to create a large, static battleground where his team can grind down opponents with Firestorm and Atrophy Aura. Puck, on the other hand, is a mobile assassin who prefers to jump on a target, burst them down, and escape. Underlord doesn't provide the instant, hard lockdown that Puck needs for a clean setup, and Puck's hit-and-run style doesn't always fit with Underlord's slow-pushing tempo. They don't actively sabotage each other, but they don't create the powerful combinations you see with other pairings.