'twisting' has long been an rpg term used for maintaining several short duration buffs simultaneously; I first came accross it in DAoC with 'chant twisting' on my skald. I think the daoc paladin was the most well known twister funnily enough, but i stuck loyally to midgard so never tried it.
In order to benefit simultaneously from all 3 buffs that empowered seals offers you have to swap between your seals at intervals dictated by judgements cooldown and duration of each buff. But swapping uses a gcd which eats into your dps and is another thing to think about while trying not to step in the masses of aoe that WoD seems to love throwing about :)
just worked through shadowmoon burial grounds and it got too late so i didnt beat nerzul, but my god the aoe puddles are relentless :)
That line of undead on nerzul is a nightmare! (i sure i saw a beta vid ages ago and there was a gap, damned if i could see one...)
(I use protection paladins so i dont use div storm.)