u/Fearless-Bad6548

Total T12 Mephisto Runs (as Barbarian):	100
Name	Count
Andariel's Visage (Helm)	5
Doombringer (One-Handed Sword)	3
El'druin, Sword of Justice (One-Handed Sword)	6
Harlequin Crest (Helm)	3
Heir of Perdition (Helm)	9
Melted Heart of Selig (Amulet)	4
Ring of Starless Skies (Ring)	3
Shattered Vow (Polearm)	3
Shroud of False Death (Chest Armor)	4
The Grandfather (Two-Handed Sword)	4
Tyrael's Might (Chest Armor)	3
Seal of the Diamond Mind	1
Seal of the Severed Finger	1
Seal of the Golden Epiphany	0
No Mythic Item Drop	51

It’s just a small sample, but I hope it’ll be useful somehow.

Btw, you get around 40mil exp per kill (no need to open chest). If you can kill him quick enough, it’s roughly 600mil exp/hour.

FAQ:

Q: Which build did you use?
A: I’m following Rob2628’s Immortal WW build.

Q: How did you get 100 keys (Crux of the False Prophet)?
A: Mostly from doing free boss carries while other people used their keys. Unlike other bosses, only one key is needed for the entire party to get loot.