Mechanics Q: LA and damage

Does anyone know if Life Attunement ...

... reduces AoE damage from Death Blossom?
... reduces target damage from Death Blossom?
... reduces damage from Strength of Honor?
... reduces damage from By Ural's Hammer?
... reduces damage from Order of Pain?
... reduces damage from Great Dwarf Weapon?

No, it does not reduce AoE damage from Death Blossom.
Yes, it does reduce single target damage from Death Blossom. (It's an attack.)

Not too sure what you mean about the last four skills but...
Strength of Honor's additional damage remains the same, even if the target is under the effects of Life Attunement.
I'm pretty sure Order of Pain and Great Dwarf Weapon work exactly like Strength of Honor and targets deal the additional damage regardless of the effects of Life Attunement.

By Ural's Hammer! increases attack damage by a percentage
so I'd assume that you would only be dealing 5% less damage with attacks while under the effects of both Life Attunement and By Ural's Hammer!
I may however, be wrong =P

Just had a look on the Master of Damage.
The AoE damage from Death Blossom is certainly unaffected.

Using the lowest damage daggers I could quickly obtain, I averaged just above 50 damage with each DB hit. This was largely unchanged when I had Life Attunement.

I believe that Life Attunement only affects your base damage - It does not affect bonus damage from skills or other buffs (but I havn't tried it with OoP or SoH).
A crit from DB with no Life Attunement hit for 55. A crit with Life Attunement from DB hit for 52. The difference is 3.
An auto attack crit was 10, a crit with LA was 7 (same difference of 3).

Oops. This^

I forgot to mention it when I said that the single target damage from DB is reduced.
(The +damage doesn't appear to be reduced, only the base attack damage from your daggers.)