you can think of it 2 ways whichever is easier to understand:
(Critmod + Focus) * Base
for destructive fury 6 this becomes: (55% crit mod) + 125% focus[90% + bard 35%] which turns into 1.55 + 2.25)
(1.55 + 2.25) * Base
or simply 3.8 * Base
the 2nd way you can think about it is:
(Base * Focus) + (Base * CritMod), again 55% crit mod = 1.55, and 125% focus = 2.25
this becomes
(Base * 2.25) + (Base * 1.55)
Anyway
at 3100 base with a 90% focus and 35% bard, with 186 spell damage (this is how much I have so I will use it to calculate!
)
Spell damage mod 3 is added in the base before any other calculations
you would go, if the AA uses the cast + recast of itself instead of some set one that AA normally use:
((0.5 + 9) / 7) * 186 = 252
252 + 3100 = 3352
3352 * 3.8 = 12737 max crit with Bard 35% + 90% item focus
or
(3352 * 2.25) + (3352 * 1.55) = 12737
Remember to cut off shit after decimal because EQ does,
Add in Rank 3 Malo and you get that 16089 * 1.1 = 14010 Max Crit with a debuffed mob
If you manage to fire it while with Druid Epic on the mob it would go even higher, You can calculate out based on the AA's level how much power it would gain further from Druid Epic, but dunno the AA's "real" level so...
Now finding the average is more fun, a 90% focus is 1-90%, bard 35% spell damage aura of the poet rk3 is a set 35% its not an avg, so we get a 36% - 125% or a 80.5% average
(3352 * 1.805) + (3352 * 1.55) = 11245 should be your Average Crit
Absolute lowest end crit rolling a 1% on your focus should become:
(3352 * 1.01) + (3352 * 1.55) = 8580
If you want to know the base non crit just move it down to (Base * Focus)
becomes: 3385 at minimum focus roll, 4877 avg without bard, 6050 at Average focus with bard, 6368 at max focus minus bard, and 7542 with bard and max focus roll