Mars + Phantom Lancer

Why this works

Pairing these two seems straightforward on paper. The idea is for Mars to trap key heroes in Arena of Blood, setting up an easy cleanup for Phantom Lancer. The reality, however, is that the Arena wall itself creates a problem. Phantom Lancer's effectiveness comes from swarming a target with illusions, but those illusions can't walk through the Arena. Illusions spawned outside are useless against targets inside, and even those created within the ring can get stuck on the wall, unable to properly attack. This fundamentally limits the army PL can bring to bear on the most important targets.

As a result, the combo often feels clunky. Mars can land a great ultimate, but Phantom Lancer might struggle to deal the expected damage because his illusions are obstructed. The success of a fight then relies on PL already being in the perfect position before the Arena is even cast. Mars still provides a strong frontline presence and a stun with Spear of Mars, which is always useful for a carry. The heroes don't actively harm each other, but their signature abilities fail to combine into something greater than the sum of their parts.