Been doing like 50-60 countess runs. No luck with Pul

So far: 3 Fal, 2 Lum, Several Sol/Amn. I really need to find a Pul so that I can upgrade my weapon. Won't be able to progress without it.
I got a Smoke armor now, Sharktooth armor lol.
Which runeword do you think I should go for with my Um rune? Crescent moon? Duress? Any other?