Now that H&H has gasless widow mines, H&H has a really devastating combination with Vorazun. Your widow mines don’t cost gas so you can build an absolutely silly number of them, AND you get them back for free because Vorazun teleports your cloaked units back home if they die. The kicker on top of that is that mines tend to die from one hit from hybrids (who are usually the only survivors from all those massive mine hits), so when they spawn back they spawn at nearly full health.
It’s absolutely silly and absolutely amazing. Now all you need to do to wipe waves for practically free is to mine the spawns, put a few mag mines on for insurance, and rotate the mine waves as they respawn while you amass your air army and use your calldowns on the really important stuff-like clearing absolutely unnecessary bases all around the map.