Originally Posted by Prinsesa
What do we know about Blessing of Sanctuary?
I haven't seen it mentioned in the Think Tank at all, but I routinely use it in 5-mans along with an 800+ block value set to try to drive my damage intake as low as possible (fully blocking Heroic Mennu the Betrayer is nice), but I'm wondering BoSanc is actually having any effect.
Particularly, what do we know about the damage reduction effect (I seem to recall that it undergoes a multiplier depending on how large the hit is) and what order does it come into relative to armor and blocking.
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I have played around with the math behind BoSanc for a while. In general it seems to be used in this fashion:
Damage = (Unmitigated_Dmg - BoSanc)*(1-DR_ac)*0.94 - block
Given that it has some interesting characteristics:
1. The more AC you have, the less physical dmg it reduces per hit (modified by AC and RF). At the AC cap, it reduces by about 18ish. At around 18K AC, it reduces by 30ish.
2. If you play around with the equations, and try to express the damage reduced by BoSanc as a type of "effective" AC, then you will find that increasing your AC will increase the amount of "effective" AC from BoSanc by a linear amount (I.E. Every 1000 AC gives the same additional "effective" AC as the last 1000 AC. This is IF you keep the incoming dmg constant.
As an example:
For an unmitigated hit of 10000 dmg, BoSanc will provide 8 additional "effective" AC for every additional 1000 AC
For an unmitigated hit of 20000 dmg, BoSanc will provide 4 additional "effective" AC for every additional 1000 AC
NOTE: Assuming max rank BoSanc
3. If you play some more with it and try to express the damage reduced by BoSanc as a damage reduction multiplier (I.E. 1-DR_bosanc), then you will find for a given amount of damage, BoSanc will provide the same amount of multiplicative damage reduction for any AC value you have (meaning a constant damage reduction if you keep the incoming damage constant.
As an example:
For an unmitigated hit of 10000 dmg, BoSanc will provide 0.8% dmg reduction for any AC value.
For an unmitigated hit of 20000 dmg, BoSanc will provide 0.4% dmg reduction for any AC value.
NOTE: Assuming max rank BoSanc
EDIT: By dmg reduction I mean: dmg = unmit_dmg*(1-DR_ac)*(1-0.008) - BV for example
If you are interested in any this, here are some threads where we discussed it over at Maintankadin:
Maintankadin :: View topic - Blessing of Sanc
Maintankadin :: View topic - Some Blessing of Sanctuary Math
And the spreadsheet of the calculations I ran:
Google Docs - bosanc