How Good is Manna Robe for the Different Classes?

[Vallanor]

If you're willing to do the Manna Robe dance on a wizard with his epic you can get +13 mana per tick over time, which is higher than C2. It's very tedious, but once you get figure out the timing it's very useful. I loved my Manna Robe though I valued it far far below my Velk robe.

I never thought the Manna Robe made much sense on the other classes, to be honest.