Hello i play a cold sorc for mf.
Arm my merc has Andys visage with jewel 30 fr
Eth thresher insight
Armor non eth treachery

What is the optimal cjouce to see that my merc never dies and can lill some enemies too?

I am poor so i cannot afford infinity.

Weapon? Isnt eth reaper roll better with 15 life leech?
Or tomb reaver.

Armor? Fortitude? Is there some other choices?

Please try to help me out here 😬

Eth reaper's probably the best merc weapon besides the expensive runewords. That is unless you are dependent on the insight-meditation aura.