Centaur Warrunner + Undying

Why this works

Using Stampede to get a perfect Tombstone placement is the main idea here. Centaur Warrunner provides the hard initiation and lockdown with Blink Dagger and Hoof Stomp, creating the chaotic, clustered fight that Undying wants. Once the fight is on, both heroes are incredibly durable. Undying's Decay saps strength from multiple enemies, making them easier to kill while fueling his own tankiness, and Centaur's high health pool makes him a painful target to focus down. This creates a resilient frontline that is difficult for enemies to break through, giving the Tombstone zombies plenty of time to do their work.

This duo wants to group up and force objectives in the mid-game. Centaur gets his initiation items, and the team plays aggressively around Tombstone's cooldown. The plan can feel a bit one-dimensional, though. If the enemy team has heroes that can destroy the Tombstone from a safe distance or simply kite these two melee frontliners, the entire strategy falls apart. Both Centaur and Undying also have limited scaling into the ultra-late game, so if they fail to create a significant lead with their mid-game pressure, their window of opportunity closes and their impact starts to fade.