
Originally Posted by
Orph
On asura, we have seen a couple lses that have slept tiamat for the better part of an hour and never had any problems with short sleep durations or resists. I was under the impression because of this that the grand wyrms built up absolutely no resistance to sleep.
Possibly the single dumbest thing I've ever read... You should quit the internet!
J/k, but seriously, every single (H)NM in the game that can be slept will eventually build resistance. The same can be said for gravity. However, that being said, spells cast with Elemental Seal will not contribute to this (and if they do, the effect is negligible). Therefore, if you had a good ES order with the proper number of BLM or /BLM, you potentially could keep the mob slept indefinitely.
I've tested this out on a few occasions against Om'youvra (typically while people are jerking off and agroing the whole fucking zone before a Limbus raid). For the first say 10-15 minutes the NM will sleep no problem (IIRC 6 or 7 casts was the magic number), but after a certain number of sleeps your accracy drops significantly (at this point I either die and laugh or gravity and run). The same can be said for elementals in the Ouryu BCNM.
Against wyrms, I've found that the first non-ES sleep will typically stick assuming you have decent gear, the second is maybe 50/50 at best, and beyond that you're SOL...