Bounty Hunter + Ember Spirit

Why this works

Playing for an early gold lead is the main idea here. Bounty Hunter sets up the play by using Track to provide vision on key targets and boost the gold from any kills. An Ember Spirit can use that information to play aggressively, either chasing down a marked enemy with Fire Remnants or split-pushing more safely knowing where threats are. Both heroes want to be active on the map from early on, so their timings line up well for creating pressure. The extra gold from successful ganks can help Ember get his core items faster, letting him snowball before the enemy team can group up and respond.

The plan often falls apart against teams that itemize correctly. Both Bounty Hunter and Ember Spirit deal a lot of physical damage, so opponents can shut them down by building armor. More importantly, the pair offers very little lockdown. A hero with an escape, a Ghost Scepter, or a Black King Bar can often survive being Tracked and jumped. If the initial ganks don't secure a big enough lead, this duo doesn't offer much reliable teamfight control for later stages of the game, making it a very feast-or-famine strategy that doesn't consistently pay off.