Silencer + Void Spirit

Why this works

Setting up a kill with Global Silence gives Void Spirit an easy window to zip in and land his combo. A free Aether Remnant without the enemy instantly using a defensive spell can secure a pickoff that might otherwise get away. Silencer follows up with Arcane Curse and Last Word, adding a bit more damage to Void Spirit’s initial burst. The problem is that Void Spirit is already so mobile and self-sufficient that he often doesn't need this kind of setup to find kills. He can create his own opportunities, so the global setup is a bonus rather than a core part of his plan.

This pairing feels fine, but rarely amazing. Their most powerful interaction is tied to a very long cooldown, so for most of the game, they operate independently. In teamfights, Silencer wants to stay in the back and control the fight from a safe distance, while Void Spirit is diving deep to find and burst fragile heroes. Their targets might be different and their positioning is completely opposite. While they don't get in each other's way, they also don't consistently amplify each other's strengths beyond that initial Global Silence play, leading to a partnership that feels pretty neutral.