Domain Invasion (Azi Dahaka, Naga Raja, Quetzecoatl) is by far the best way to farm beads for the amount of time you put into it. With the zone buff for double bead yield, you'll get 200-1000 beads per kill. A few notes about getting better bead yields:
- For simply being present for a kill, you'll get the minimum yield of 100 or 200 (depending on the zone buffs)
- Each Luck vorseal you have adds that many beads to any NM kill, including these wyrms, but is not affected by the zone buff
- Try to get there before it pops to get more time for evaluation
- Since trust buffs like songs affect everyone, you might want to use trusts that cover what you're not getting, like for status removal or Sambas
- Depending on your job, you'll want to focus on a specific task to ensure you get a better yield
- Melees will want to spam WSs and get in as many crits as possible. I like summoning Lilisette II since her crit rate is exceptionally high, though I can't say yet if the trust actions count towards evaluation
- Mage jobs may have a harder time here since most healing and buffing is done by trusts, and magic damage is just plain too slow with no consistency in SCs. However, enfeebling and enhancing provide good evaluation.
- Azi Dahaka seems to land if his dahaks are killed