I had always thought that every mana preservation focus effect on an item saved a random percentage on each cast, normally between 1% and the maximum value. (It might be possible to set a different minimum percentage, though I didn't think this feature was ever used in our era.) I've been told a few items may have an effect with a fixed percentage mana preservation effect, such as Obsidian Requiem on the Obsidian Necklace, potentially making them significantly more valuable than they might otherwise seem. This would surprise me, but I've been wrong about this sort of thing before. Can anyone (preferably someone who can see the actual code implementation and database data) say which is correct?
There is not a fixed preservation as it's currently coded. If this was a thing for a few specific items it may have been hardcoded exceptions, as there is no difference to trigger this in the spell data among the Obsidian Requiem and Mana Preservation spells.
Hold up, even mana preservation if a random percentage? I knew damage mods were a random percentage but not my mana pres as well! Are they gunna make spell haste a random percentage now?
I think mana pres, direct damage, and healing foci were random between specific percentages, and the others were fixed. I think dot damage mods were broken on AK, and I do not recall their effect on live.
Range, Haste, Extension, Reagent Preserve all use the maximum value listed every time. Range will only fire if it is necessary. Damage/Heal and Mana Preserve will use a variable amount from 0-X. There are fixed mana preservation effects but not focuses. For example your Specialization skill at 200 provides roughly 10% Mana preservation which stacks with everything else. Spell Casting Mastery 3 AA also provides a stackable 10% Mana preservation.
