After grinding for 3 days and probably over a hundred Countess kills, I finally got the pul rune I needed to upgrade my weapon (Athena's Wrath) in Diablo II: Resurrected.
I'd been cubing up every rune she dropped, but it was intensely frustrating that she dropped only like 3 runes above hel in all of those runs. I had 2 lem runes, 2 fal runes, 2 ko runes, 3 lum runes and 2 io runes, so I needed like... 1 more of any of those for like 50 runs. I did the math and saw that I was going to need thousands of thul runes to cube up what I needed, but she almost never dropped anything better than that. Until, finally, she gave me the pul rune outright.
I hate thul runes now. Chipped topazes are almost as rare as high runes when you need them, so you end up with gobs of them choking your stash and it starts to make you wonder if it's worth picking them up. A dozen normal cow runs and just opening every chest and killing everything in sight through act 1 got me like 4. I think I understand when people say they don't grab anything below like lum.
Oh well, I got it, and my werewolf druid now does almost 4k damage with fury and my act 2 mercenary. I can honestly say I've never had a melee character in Diablo II that actually felt powerful until now. Usually by the time I get to hell difficulty, killing even trash enemies is a chore even with crushing blow.
Now I just hate physical immunes.