Earth Spirit + Faceless Void

Why this works

Setting up for Chronosphere is the obvious play, but the coordination can be surprisingly clunky. If Earth Spirit uses all his abilities to start a fight, he has nothing left to offer once the dome is down. The stronger potential often comes from playing around the edge of the fight. Earth Spirit can use his roll and kick to knock enemies away from the Chronosphere, preventing them from saving their allies inside. He can also apply Magnetize to a hero trapped within, letting the damage spread to anyone else Faceless Void managed to catch. This requires patience from both players.

In practice, success hinges on Faceless Void catching the right targets without trapping Earth Spirit as well. When it works, the carry gets a clean kill while the rest of the enemy team is stunned or silenced on the outside looking in. When it fails, Earth Spirit is stuck inside the sphere unable to cast spells, or he's too far away to contribute. This makes the pairing less about a guaranteed big ultimate combo and more about creating two separate zones of control, which can be very effective but also falls apart if the timing or positioning is slightly off.