Originally Posted by
Kretan
Also since I haven't seen it posted elsewhere our mana situation:
Shadowmend: with lingering insanity you can cast 6 back to back before oom. Once oom, you can cast 1 every 2.5 seconds through mana regen. This feels pretty good to be honest with how strong this heal is. it is about 15% of your hp in arena per cast accounting for crits.
Mass Dispel: 40% mana. I'm glad I can actually use it now at least.
Purge: 20% mana. With regen you can cast 6 in a row before OOM.
Power word: Shield: 12% mana. You can not oom from chain casting this. regen takes 3 seconds to recover the lost mana.
Psychic Scream: 14% mana. It's not a lot, but I still don't like CC being on the mana bar. Probably not a big deal since regen is SO fast, but still kind of annoying.
A full mana bar takes 25 seconds.