Stacking Question: Foresight/Breaking Wave +Faith in the Light
So, I'm trying to build a monk designed primarily to deal loads and loads of damage. One thought is to use skill runes that add damage to all enemies for a given period of time, e.g. Deadly Reach runed with Foresight and Crippling Wave ruined with Breaking Wave. The question is, if I use Foresight which increases the damage of all attacks by 18% for 30 seconds, and Mantra of Conviction (which adds 12% damage), does that 18% and 12% add to equal 30%? If I use Breath of Heaven runed with Blazing Wrath, which increases your attacks by 15% for 45 seconds, does that 15% get added too? What about Faith in the Light with Blinding Flash, which adds damage specifically as Holy - how does Holy damage stack with physical damage?
Re: Stacking Question: Foresight/Breaking Wave +Faith in the Light
I don't see how Mantra of Conviction and Foresight can add additively, since MoC is a monster debuff that causes them to take bonus damage, while FS is a player buff that raises your damage. So it'd likely be 1.18*1.12 ~= 1.32 or a 32% net increase in damage.
As for FS and Breaking Wave, I'm guessing that they both raise the same player stat (like ED% in Diablo 2), so they'd work additively.
As for Faith in the Light and the above, I'm guessing it's multiplicative, since it adds a percentage of the player's weapon damage to every attack - so it might be raising the player's base damage, which then gets modified by the other buffs (which seem to raise all damage in D3 unlike just physical in D2).
No way to know for sure till the game is out though.