This is how I see this going...
NIN/run x3
GEO
SMN
BRD
NIN keep Migawari up, Lux x2/Pflug
For death resists--
Offhand Odium, Shadow Ring + Warden Ring, Samnuha Coat
GEO Idris - GEO-Frailty, Entrust-Vex, Indi-Torpor
BRD does SVCC Dark Carols, DD songs, gives support mages Hymnus at all times as safety RR (since Thwack will remove it)
SMN applies RR to each mage to help them survive Thwack
Mages sit in DT sets and move away from NINs (except GEO)
After Thwack, SMN repeats RR on all mages, NIN keep recasting Migawari and pray they resist Death.
Just for reference, I'm pretty damn certain that both Meva/dark resist and Plfug do nothing to prevent the Death spell from landing.
Anyone recall the ambuscade with the Airiman that could cast death? That damn thing death'd and killed my RUN like every freaking run. And that was with Shadow ring/Eihwaz/Samnuha, And Lux x3 and Pflug.
Still, this is an anecdotal account. So take my opinion with a grain of salt. But at least be aware that this is something that needs some testing before we assume a strategy can be based on it.
If anyone is interested in doing some death testing, Angra Mainyu in dynamis Beaucedine is an amazing test mob for death. Although unlike my
Shadow Ring testing RUN(and NIN) can't wear the Twilight set, which would make the testing a bit harder. Of course, if we're just looking to see if pflug can ever resist death, then /RUN should also work. The hard part there though, is that pflug has a recast and every time you die, you lose the buff. So sample gathering for pflug is likely to be rather painful.
And for meva/dark resist, well, if that worked, my PLD should have been resisting the ***outta Death during my shadow ring testing, just by being in mostly ilvl gear(Twilight set being the nonilvl gear)
I'm also curious to see if Death resist gear suffers the same issue as resist+ gear. That being that you only get half the listed potency vs NMs. Shadow ring didn't have a listed potency, so my testing does inform about that.