devtrackers.gg
Maybe if we're lucky u/Mark_GGG will be willing to help us out. My impression was that Spellslinger just added the final damage of your wand to the spell as a flat number (in this case the 74-181 on Obliteration), not the mods themselves.
If you look at a wand (or any weapon) item, in the base properties section above the mods and requirements, it will show that weapon's damage values. If you equip that weapon, those values are your base attack damage (for that hand). Those numbers are what Spellslinger cares about. Local modifiers can affect those numbers (making the physical damage display in blue if modified, and adding values for other damage types).
So this means that a mod on a ring:
"Adds x-x fire damage" would effectivly "double"? Because it would add damage to a spell and to a wand?
and mod:
"Adds x-x fire damage to Attacks" would not add damage at all.
Do I understand this correctly? /u/Mark_GGG
Neither of those mods change the damage of the wand. If you equip that ring, you will see the displayed damage values on the wand will not change -those values are what Spellslinger looks at.
No other item can affect those values, only the wand's local modifiers.