Earthshaker + Luna

Why this works

Pairing these two together is often a bet on the mid-game. Earthshaker provides the lockdown that Luna completely lacks in her own kit. A long-range Fissure can secure a kill for Luna on an isolated hero, but the real combo comes online with Echo Slam. Earthshaker blinking in to stun multiple enemies creates the ideal setup for Luna to run in and get a full-duration Eclipse off without being immediately targeted. The whole sequence depends on Shaker finding that perfect initiation, as Luna otherwise struggles to use her ultimate offensively in a messy fight.

Before Earthshaker gets a Blink Dagger, the two don't offer each other much. Luna is typically focused on accelerating her farm with Moon Glaives, while Shaker is either securing his own lane or roaming for opportunities elsewhere. Their game plan hinges on hitting that mid-game timing and snowballing off successful teamfights. If the enemy team respects the threat and plays spread out to minimize Echo Slam's impact, the synergy falls apart. Luna is then left to play a more conventional right-click carry game, and Earthshaker's value shifts more toward counter-initiation and peeling for her.