Praxxia wrote:With Spell Pen listed as being so high in value, wouldn't Don Rodrigo's Band (AV Exalted) we worth ~99?
Also I'm curious about how the Mara epic dagger (Blade of Eternal Darkness) stacks up. Most wowhead comments list it as being a 10% proc chance. Math is not my strong suite but wouldn't that be 15-20mp5 for Spriest? And then the 100 dmg proc would be affected by things such as CoS, Shadow Weaving and Nightfall.
Mara dagger sadly has no proc here unless that changed fairly recently

Be careful about the spell pen value. Different bosses have different amounts of shadow resistance so Don Rodrigo's Band could contribute to no DPS on some bosses. I am yet to find a source that is confirmed to be 100% accurate when it comes to boss resistances.
http://vanillagaming.org/forum/index.php?topic=15951.0
That is the source I used, but I've been told that this is incorrect here. Until I have a better source I've just left those values there.