Ringmaster + Undying

Why this works

Grouping enemies with Ringmaster's hypnotic pull for Undying's Decay and Tombstone looks like an obvious setup. The problem is that both heroes are trying to accomplish the same goal of controlling a small area, and their abilities can be redundant or even conflict. A successful pull might bring enemies together, but it can also place them in a spot where the Tombstone zombies can't effectively chase them. It creates one big, tempting target area for the enemy team to counter with their own area-of-effect spells, clearing both heroes' contributions at once instead of having to deal with two separate problems.

The laning phase with Ringmaster and Undying can feel a bit awkward; they create a lot of pressure but might lack the burst damage to finish a kill. During mid-game teamfights, everything hinges on perfect positioning and timing that is difficult to achieve. Enemies will often separate the two, focusing down the Tombstone before Ringmaster can find a good pull, or baiting the pull and then turning on Undying. The fight becomes about which team can better dictate the engagement area, and this pairing doesn't offer a clear advantage in forcing that issue.