Anyway to recap
Level 20+ bind turns all bound demons into uniques with aura enchanted, extra strong, extra fast, spectral hit. Even random trash mobs or demons that can't normally be uniques, but it will only have those affixes if its a trash mob
Any cursed unique enemy will gain all those affixes even if it doesn't display them under its name, so every cursed demon unique can be bound to become a curse + holy shock/freeze/fire aura that spreads aoe amp damage.
Ismail Vilehand is the only superunique demon that will always have cursed affix, so every time you bind Ismail he'll be cursed, aura enchanted and a bunch of other affixes.
There's a 1/7 chance of each aura so 3/7 chance any ismail vilehand you bind will be amp + holy aura, and a 1/7 chance that any demon you convert- even trash mobs- will have conviction, or fanat.
Also it appears that the skill is doing insane amounts of damage and we can only really guess at the mechanics. The best guess is that when it says "+732 damage / +460% damage" on level 26 bind demon + mastery, its actually adding base damage AND global % ed.
So maxing it out on my random non-max possible setup with with level 50 bind demon / 53 mastery / 50 blood oath with +1428 damage / +850% damage / +57% eias / +38% frw / +77% all resist / +11% dr / +1300 AR, and given level 12 fanat aura on self (+237% ed / +31% eias) + 230% from might on a2 merc, + cursed, +99% extra strong, +spectral hit
I don't know how TZ affects base stats, so let me just use even a lowly non-TZ hephastus
If those assumptions are all true, hephastus has a base 140-170 physical damage and uses animation 5P with 14 framesperdirection / 255 speed / 7 action frame, so a 13 FPA regular attack with simple math.
His EIAS should cap at +75% since that's where d2 engine hard locks attack speed, so 7 FPA attack, +15 AI delay frames, so he hits at 22 FPA
Now how is his damage really calculated? If they seriously are giving him +1428 base damage and +1416% ed then he's dealing a ridiculous 23770-24225 damage per attack before cursed
which actually is what it looks like he's fucking doing
Now just for testing's sake, not quite those numbers since no might on merc so maybe around 20k damage per hit predicted, no cursed affix to make it simple. He's in bloody foothills P8 doing about 66-100% of the hp of a burning dead archer trash mob in a single hit (they have HP ranges even if his damage isn't much of a range). Those skeletons should have 17658-25231 HP average with 33% dr. So yeah, it looks like he's doing about 20k damage per hit. Not including the minor spectral hit / etc damage which is extremely tiny by comparison to the ludicrous base damage. Also he should have 5% chance to crit.
By contrast, if all you had was aurabot with 1 point in the skills same setup, level 26 with +732 damage / 460% damage, and no might aura, no fanat. Then he's just 5k or so damage per hit
so ur saying i can find hephisto with fanat and on bind he can ALSO get holyshock or holy freeze?