As a small addendum to the previous post:
https://project1999.com/forums/showp...&postcount=411
If you want to take into account the Iksar regen for the 30 minutes of pulling/recovering/waiting for respawns, that is another 2601 mana assuming you canni dance for an hour straight without missing a tick somehow.
That is 14382 mana saved per hour on an Iksar Shaman who is root rotting if they canni dance for an hour straight without missing a single server tick, they never get a root break, and they never get hit.
A JBB Shaman is saving 13825 mana per hour. It is a nearly impossible task to get the 500 mana over a JBB Shaman in the same hour. The JBB Shaman simply needs to cast slow, spam jbb, position the pet behind the mob, and pull.
Realistically speaking the JBB Shaman is saving a significant amount of mana compared to the Iksar Shamam who is root rotting without Epic in the same hour.