Faceless Void + Rubick

Why this works

Dropping a huge stolen ultimate inside Chronosphere is the dream scenario. When it works, it’s a clean fight win. Rubick can steal something like Ravage or Black Hole, and Faceless Void provides the perfect, uninterruptible setup to land it on the enemy's most important heroes. Outside of that specific interaction, Rubick’s Telekinesis can offer some minor setup for Void to Time Walk onto a target, but this isn't a core part of their game plan. The entire value of the pairing hinges on what spells are available for Rubick to take.

This potential combo is unreliable, though. The whole plan falls apart if the enemy team lacks a big teamfight ultimate for Rubick to steal. Even if they have one, Rubick has to be in the right place at the right time to get it, and then live long enough to cast it inside the Chronosphere. Before they both have their ultimates online, these two heroes offer very little to each other. Faceless Void needs a safe lane to farm, while Rubick is often busy somewhere else on the map. It's a pairing that looks great on paper but often doesn't come together in a real game.