Lifestealer + Mars

Why this works

Infesting Mars for a big Arena of Blood initiation often looks better on paper than it feels in-game. The main problem is that Mars's own abilities can make it hard for Lifestealer to connect with targets. God's Rebuke knocks enemies back, creating distance that Lifestealer needs to close, and the Arena wall itself can block his attacks. Even a successful Spear of Mars that pins an enemy can leave Lifestealer awkwardly positioned, unable to get the right angle to hit them inside the circle. The whole setup requires perfect coordination to avoid tripping over each other.

This leaves their shared game plan feeling predictable. Opponents can see the Infest-bomb is the primary threat and will itemize with Force Staffs or other save abilities to counter it. If that big initial commitment fails, the fight often falls apart, leaving both heroes exposed. Once Arena of Blood is on cooldown, Mars doesn't provide the kind of sustained lockdown that Lifestealer needs to stick to targets and control a longer teamfight. The success of the duo relies too heavily on a single all-in play that smart teams can defuse.