Doom + Storm Spirit

Why this works

Casting Doom on a target Storm Spirit is trying to burst is a classic case of overlap. Doom's ultimate is designed to completely remove one enemy from a fight, silencing and disabling them entirely. Storm Spirit also excels at single-target elimination, using Ball Lightning to close the gap and unload his spells. When both heroes commit their biggest cooldowns to the same enemy, it's massive overkill. The target was likely going to die to either hero's full commitment alone, meaning one of them has effectively wasted their most important ability. This leaves the duo with fewer tools to handle the rest of the enemy team.

Throughout the mid-game, this forces them into awkward gank attempts where they either split up, weakening their pickoff potential, or group up and use their abilities inefficiently. Teamfights feel disjointed. Once their primary target is eliminated, both Doom and Storm Spirit can struggle against the remaining heroes. They don't offer much sustained area-of-effect damage or control, making it easy for the enemy team to trade one death for a wider fight victory. Their game plans are too similar, focusing on deleting a single hero rather than enabling a broader team strategy, which often leaves the rest of their own team exposed.