WHM: Level 50, normal ilevel 120/130 gear
Total MP: 4353, Natural MP recovery speed in combat: 87 (87/4353 = 0.0199), out of combat 261 (0.0599)
MP recovered once Shroud of Saints begins:
144,231,318,530,617,829,916,1128,1215,1427,1514,1726
87+87+212+87+212+87+212+87+212+87+212, That is a total of 1582, of which only 5 ticks are 212. Let's drop that first tick to compare with the next set. So 1495.
WHM: Level 50, no gear except ilevel 100 blue weapon
Total MP: 3752, Natural MP recovery speed in combat: 75 (75/3752 = 0.0199), out of combat, 225 (0.0599)
122+197+409+484+696+771+983+1058+1270+1345+1557
75+212+75+212+75+212+75+212+75+212=1435, again of which only 5 ticks are 212.
Note the Shroud of Saints text says 15 seconds. If Shroud is not activated, the same 15 seconds recovers 375MP. Those Shroud of Saints ticks are in between each MP recovery tick.
So how is this any different from what I posted last time? It ISN'T. 15 seconds recovers 10% of your MP normally, and with Shroud it you end up with 38%(1435/3752) without gear, and 34%(1495/4353) with gear.
Compare that with the Scholar who recovers 20%, flat by Activating Aetherflow regardless. The description for Energy drain is "Potency 150, recovers 50% as HP, recovers MP", which is doubles the amount of MP recovered by energy drain at level 36. You get Aetherflow at level 6, and Energy drain at level 8.
Doing exactly the same thing on SCH:
SCH:47 (MP:3113) geared, Aetherflow off, in combat. Has same 2% MP regeneration rate as WHM
145,207,269,331,393,455 over 15 seconds
62+62+62+62+62=310MP
622 is recovered from Aetherflow, 228x3 is recovered from Energy drain, total 1616 (52%)
SCH 47 (MP:2890),Gear off, Aetherflow and energy drain activated, in combat
229,864,921,1149,1206,1434,1491,1719,1776 over 15 seconds
633+57+228+57+228+57+228+57 = 1547MP , since we want 5 ticks of natural MP recovery to make a fair comparison with above, I'll add one more. 285MP from natural recovery, 633 from Aetherflow's 20%, 228*3 from Energy Drain. 1602 Total. That's 55%.