I know it has changed bunch of times but looking for understanding how it works now?

I've had this charm for ever and just trying see if its useable

Mystical fire XII
Level Req: 45
Spell Damage: 54 to 144
Mana Cost: 93

+10% Life Steal
+1% Armor Pierce
+6% Critical Flux

It is based on a pretty weird Formular, but to keep it short:
It is tied to monster difficulty and not really worth going for.
Nice to have as a side mode but not really needed/useful

its still like 1 to 10% now right?

so dont use the LS anymore ?

It doesn’t.

Or at least not to the effect that it is a desirable main stat.

No it is completely different
Paul explained it during the rewrite last year but I haven’t found the post yet

oh? really? i thought thats what he changed it years ago so I wasn't sure if that stayed.
Ok gotchu!! hey thanks for the help!

Found it:

http://forums.d2jsp.org/topic.php?t=79061200&f=272&p=533899834

Sounds like it was buffed. So confusingμμ

It was buffed or nerfed depending on your level and how you look at it. Before the rewrite lifesteal felt ok on eps.

Ok so what's the formula? Does anyone know this? I see his post but I'm unsure for the formula