Quote from Kingofrunes;1143014:
Wish I could really help there but Ego Wands are the least researched and have the least known mechanics out of any of the other ego weapons. mostly due to how needlessly complex devcat designed magic.
I don't really think we know much about pre zero ego wands only that they are outclasses by other wands upgraded for magic damage. Also the fact that max damage does factor into firebolt damage for current ego wands.
If I may add my 2 cents here...
I did research on ego wands a while back and found that ego wands add the min-max damage listed on their weapon description as well as the normal wand bonus to bolt magic. I.e the ego wands physical damage influences the wands respective bolt magic. This however does not affect intermediate magic.
example: normal ice wand compared to ego ice wand with 10~ 20 damage. Normal ice wand will add the +10 icebolt damage as expected. However, an ego ice wand will add that +10 to icebolt AND the 10~20 damage from its physical.
The above applies to all ego wands. However, since its the chaincasting ego wands that get increases to their physical damage, those are the wands that get the most respectable increases in damage, bolt wise. However they are also the most limited, as they are chain casting wands, they don't allow for fusion bolt.
Now in the case of firebolt, the extra ego damage is added after the charge multiplier as shown in this example of the current magic formula; ((magic base+magic base reforge+(max damage enchant*enchant coefficiant)*charge multiplier)+wandbonus+egowandphysprop)*......
egowandphysprop meaning the ego wands physical damage. that being said this only applies to bolt magic, if i may remind you. Now this means that ego wand damage is simply aggregated to the bolt damage base, and is not stacked by charge multipliers. however it is still affected by the magic attack multipliers. In laymans terms, if a normal fire wands do 1600 full power firebolt, then an ego firewand does 1750 damage instead of say...2000 damage.
I hope that helps alleviate confusion. fell free to ask questions. i'll answer when i can.