"A youtuber of the name “goatunnheim” did a pretty neat test to find out how much MF this actually gives(4200 after full ritual). Goatunnheim put on a lot of hero edited charms that gave -100 MF and then tested with monsters that should drop magic items. In Goatunnheim’s words:
“It was mentioned on Discord that a full ritual of a soul pack gives you 4200 MF Here I verified this using a hero-edited character. Further testing shows that a partial ritual gives you a fraction of the 4200 MF, and that the MF stacks if you repeat the ritual. From the testing it seems that the MF that each letter gives is 150 * (number of souls participated). Since 600 MF is way more than enough, one can simply go farming after they finish the first letter D.”"
Found this on a reddit thread a while ago when I was trying this in LoD. According to that video the ritual does indeed stack, granted idk how much it'll effect the drops after 4200mf but I guess if you can stack light resist and sorb and just chill out for a while it may be worth doing multiple times
https://www.reddit.com/r/diablo2/comments/14wups7/this_shocking_easter_egg_was_recently_brought_to/This was the thread that the guy explained it on if anyone wants some more information on it.
Hey thanks for posting. Good info