vampire’s gaze/tal paired with reapers toll that could also an amn rune. He have between 20-30 easily.
If you want him to have survival he can have it. While folks focusing on him as stat stick he wouldn’t be able to survive anyways.
Zeal din, vengeance din and smite din. Can handle content fine with merc alive.
On trav focus using max res armor, about everything else duriel can be great by the amount of resist, life and cannot be frozen.
If you pair him with defiance aura and fanaticism from din. He has roughly less 20-40% odds of being hit, plus apply decrepify effectively reducing the foes damage and slowing them, with a great aspd and lifesteal.
Might aura often increases roughly 50% while having double lifesteal you increase his steal by double.
3k dmg with 10% steal means roughly 3-4% which means 90-120life per hit. While 20% of 2k would mean roughly 6-7% that would be 120-140 per hit.
On top of that less odds of being hit, that would means less odds of being locked on fhr animation. So would steal more life per hit, take less hits and self sustain better overall.
Folks got used to invest on offense on merc because the imediatism and MF runs being faster, not because they wanted better survivability on merc. If defense weren’t great on merc, folks wouldn’t use eth bug.
Defiance aura, reapers toll, lifesteal helm and duriel you can have merc managing travincal, halls(without vipers), cows with some perks and other contents. While if you leave him alone he most likely will die on cows, mine can go well on trav and halls. Trav he only are at risk if he stop attacking foes by the map layout.
While duriel isn’t the best for trav, the max resist armor is the most interesting choice in there.
Reapers toll 12 lifesteal, tal helm 10% lifesteal, amn on reapers toll 7% lifesteal. That means 29% lifesteal that would reflect almost 9-10% on hell. While with vampire’s gaze should be 25-27% meaning 8-9%
If you consider that merc often uses jab and does around 2-4 hits per sec those leech stacks really well. On top of that decrepify reducing 50% the physical resist, damage and speed the lifesteal gets even better.
If folks consider him less stat stick and more like a real hireling, they would be surprised how much they can survive.