Originally Posted by
Tiberria
Your mana regen - at level 110 - is 46,639 / 5 seconds or 279,834 per 30 seconds excluding any regen trinkets but including all regen artifact traits.
Within those 30 seconds, you have to cast at minimum - regardless of Rejuv or WG usage:
1 x Efflo = 47,520 mana
2 x Lifebloom = 52,800 mana
That leaves you with 179,514 mana in a 30 second window for discretionary WG/Rejuv casts.
WG costs 70,312 mana, so - no - regardless of how efficient WG is - you absolutely can not afford to cast it every 10 seconds on CD even if you cast 0 Rejuvs.
If you take SoTF, - a SM - WG is 101,112 mana, so you would be able to afford basically 1 additional WG within that 30 second window if you cast 0 Rejuvs period. In any real situation where you can't just not cast anything for 10 seconds and need to contribute some level of HoTs, you're not going to be able to do that, so it is 100% reasonable to say - if you take SoTF, you pretty much can not cast WG outside of SoTF procs. If you only cast one SoTF-WG every 25 seconds (using Swiftmend as often as possible basically), that works out to 121,334 mana consumed per 30 seconds. That leaves you with 58,180 mana to play with. Rejuv is 22,000 mana, so you can afford to cast 2-3 of them every 30 seconds. Therefore, this is what we can afford to cast in an SoTF build in a 30 second window.
1 x Effo
2 x LB
1 x SM
1 x WG
2-3 x Rejuv
That is it - unless you get regen trinkets. Does anyone have the link for the fully upgraded Darkmoon Card, so we can calculate the expected mana reduction from that.
If you don't take SoTF at all, and take a Cultivation build, you also can not afford to cast WG every 10 seconds on CD. That will exceed your 30 second mana regen budget by about 15%. You would be able to afford:
8-9 Rejuv casts with 0 WG usage
1 WG cast and about 5 Rejuv casts
2 WG casts and 1-2 Rejuv casts
Your best bet is probably to just cast WG once a minute when it lines up with Flourish and/or Essence of G'Hanir and otherwise cast Rejuv.
Any one that spouts on about WG being our most efficient heal therefore can always be cast on CD is just ignorant of the math; you can't afford to cast it that much and will have to restrict it to about once a minute in non SoTF builds and to only line up with SoTF in an SoTF build. Unless we get completely overpowered regen trinkets (and the 815 version of the DMC works out to about 2 more Rejuvs per 30 secs), that's going to be the reality.