What's the point of Benefic I?

[-BlueGreen-]

Think that's bad? Try Sage's situation...

Diagnosis 450 potency for 400 MP = 1.125 potency/MP
E.Diagnosis 300 potency + 540 shield for 900 MP = 0.933 potency/MP

And let's not forget that when you do Dosis and the like, you get a "free" 170 potency heal that is not applied when doing the two above!

Dosis (via Kardion) 170 potency for 400 MP = 0.425 potency/MP (and you do damage)

Sage also has Soteria which boosts this Kardion healing by 50% for 15 seconds, causing it to reach 0.637 potency/MP.

Expand the math over 2 GCDs to account for Addersting, and E.Diagnosis gets a huge boost (strictly in terms of efficiency, the other situations don't change since it's 2x the same skill):

E.Diagnosis 300 heal + 540 shield + Toxicon 170 heal for 900 MP combined (Toxicon is 0 MP) = 1.122 potency/MP

And let's not forget that over those 2 GCDs, your raw healing potency (adding in shields) works out to:

Diagnosis (x2) = 900 potency
E.Diagnosis + Toxicon = 1010 potency
Dosis (x2) = 340 potency
Dosis (x2) + Soteria = 510 potency

It's clear that E.Diagnosis is so much better over Diagnosis when taking everything in context. It heals for more over 2 GCDs and suffers from only a 0.003 drop in potency/MP efficiency! (oh, and unlike Diagnosis x2, the fact that Toxicon is part of this also means you're dealing 330 potency damage to a single target +50% of that to nearby)

Diagnosis isn't even great at low levels where you're effectively spending a GCD without Kardion to heal a bit more than if you simply just used a DPS skill. Sastasha through Thousand Maws is basically "Kardia the tank and then become the 1-button wonder".

Want to delete Diagnosis from your hotbar? Too bad, you need to combo it with Eukrasia in order to access E.Diagnosis.