Keeper of the Light + Lifestealer

Why this works

Taking objectives and controlling tempo gets much simpler with this pair. Keeper of the Light’s ability to Recall an Infested Lifestealer to his location creates a global gank threat that forces opponents to play defensively. An enemy hero farming a lane alone is never truly safe. In teamfights, the synergy continues. By using Chakra Magic on Lifestealer, Keeper of the Light dramatically lowers the cooldown of Rage. This means Lifestealer can be magic immune for most of a fight, letting him stay on his target and ignore enemy spells that would normally kite or disable him.

The game plan is to accelerate Lifestealer's farm and then use him to break the map open. Early on, Keeper of the Light can help secure lanes and provide the mana for Lifestealer to farm aggressively. Once the Recall-Infest combo is online, they start hunting for pickoffs, translating those kills into tower pressure and map control. To counter this, the enemy team has to stay grouped and invest heavily in vision, which slows down their own farm. Their only real opening is to try and burst Lifestealer in the small gaps between his Rage uses, a difficult task when KotL is nearby to protect him or provide another cooldown reduction.