I was wondering why Blight Fiends have such low HP scaling. Considering its a bulk of flesh you’d think it would have a lot of HP. More often than not, I find Hellhounds even at low ranks outpacing their HP growth. The Briarthorn at least feels intended to be a tank pet so it makes sense that its HP is so high. Is it because of the explosive aspect of the Blight Fiend?
I’m assuming it’s because Unstable Anomaly allows you to summon up to 3 and is more accessible than a second Hellhound or Briarthorn.
It is not a bulk of flesh, it is rotten carcass that is bloated with pus and gas. Hence the low Hp 
Perhaps Unstable Anomaly could make their hp lower so you could get better big ones.
I get they’re full of gas maya but that doesn’t mean they are hollow
It already works this way
Unstable anomaly doesn’t decrease their Hp. It just makes them temporary pets.
It just reduces cooldown, energy cost, and they live for 12 seconds according to the tooltip