Doom + Slark

Why this works

Applying Doom to a target gives Slark a free kill, which is the main idea here. A helpless enemy allows Slark to build up Essence Shift stacks without any risk, giving him a strong start to a fight. The problem is that this is often redundant. Slark already excels at hunting and killing isolated heroes on his own. Committing both heroes and a long-cooldown ultimate to kill one person can be inefficient, especially when the enemy team can trade for a bigger objective elsewhere on the map. It's a simple plan, but one that puts all the eggs in one basket.

This pairing's game plan can get awkward. Slark thrives on constant skirmishes where he can use Shadow Dance to weave in and out of fights. Doom, however, contributes his biggest spell and then has little follow-up control until his ultimate is ready again. After the initial pick-off, the rest of the enemy team is free to counter-initiate on a lineup that has spent its main lockdown tool. If the enemy team decides to group up and force five-on-five fights, both Doom and Slark can struggle to find the single-target openings they need to be effective.