Originally Posted by
Beace
A lot of different theories going on here. Diminishing returns, 15% of current value, 15% bonus to "attacks you're not already dodging".
15% of current value is obviously ridiculously wrong. OP is getting 13% extra dodge from the Mantra, and 15% of his dex-based 13.77% is just ~2%.
OP has 87% chance of getting hit. 15% of that is ~13%, which matches OP values very well. I'm guessing this is it, despite how weird it seems.
I also tried it on my lvl 43 monk. I have 25.4% dodge chance unbuffed, meaning 74.6% chance to get hit. 15% of 74.6% is 11.2%, so if this theory is correct, my new dodge with Mantra up should be 25.4 + 11.2 = 36.6%. Which is exactly what shows up for me in-game.
That's obviously how it works. I guess if you just look at the dodge value, this is indeed a sort of diminishing return. The higher base dodge chance you have, the smaller +% the mantra will give you. I suspect if you look at avg dmg taken, there's no diminishing returns though (but I haven't done any math on that, so could be wrong).