Alchemist + Techies

Why this works

Securing farm for an Alchemist is the main goal here. Techies can make a section of the map incredibly hostile for gankers by mining the surrounding jungle and entry paths. This gives Alchemist the space he needs to accelerate with Greevil's Greed, letting him hit his item timings sooner than he normally could. Any attempt to invade his space risks running into Stasis Traps or Proximity Mines, often turning a gank into a kill for your team instead. Alchemist's Acid Spray also reduces armor in an area, which can soften up targets caught in Techies' traps or trying to run away.

This partnership creates a specific clock for the game. The enemy team is pressured to break through the Techies' defenses before Alchemist gets too big to handle. If they can't, Alchemist emerges with a huge item advantage and starts taking over the map. At that point, Techies' job shifts to providing long-range initiation and control in teamfights, setting up easy kills for a farmed Alchemist. However, the plan is vulnerable if the enemy team is able to apply heavy pressure elsewhere or manages to de-mine effectively, as both heroes can be weak if forced to fight away from their prepared areas early on.