Arcane Combat+Stealth\Shadowstrike interaction

[GlassGo]

So, subj.

When striking from stealth, the attack is automatically critical if the target does not notice you just before you land it.
Shadowstrikes do +14.3–71.4%cTS damage versus a normal critical hit up to 3 grids away and then disminishes to 0% at distance 10.
These bonuses are guaranteed for spell and mind crits even if the target can see you before it hits.

So, does it mean, that every proc of Earthen Missiles from Arcane Combat would be a guaranteed Shadowstrike proc, due it is a spell, and that happend even if target can see character before hits?

[HousePet]

I have no idea.
This might be one of those 'try it and report back' questions.

[GlassGo]

Well, which skill should I rise to use it efficient?
First I thought that it would be enough 1\5\0\0, but now I doubt, it's not that simple.

So, first I should enter stealth mode, right?
But what happend if I'll attack someone?
Looks like only first attack wil be crit.
Then I fell out of stealth.

[stinkstink]

When performing melee attacks with Stealth active, you have to pass a stealth check versus your target's stealth detection to get an automatic critical hit. On top of that, any non-stealthy talent also requires Unseen Actions and a stealth check versus every enemy in sight to avoid breaking stealth. Bump attacks count as a stealthy action, so they only have the base melee check to contend with, but most other melee techniques require both.

[GlassGo]

Thanks!
And what will happen if character makes bump attack with Arcane Combat proc Earthen Missiles, which are spells?
And which melee talents count as non-stealthy?
I'm interested specifically in Pugilism and Unarmed Discipline.

[stinkstink]

IIRC if your bump attack does not break stealth, your Earthen Missiles cast will auto-crit, then the Unseen Actions check is performed for the spell to see if you remain in stealth. One important distinction I forgot to mention is that the stealth check for melee attacks happens before the attack fires, while Unseen Actions is checked after.
The only abilities in the base game with no_break_stealth are the Traps and Poisons trees, Nimble Movements, Attack, and Reload. Everything else requires Unseen Actions.

[GlassGo]

Well, and what happend if char has Unseen Actions?
Char bump, AC proc and make EM burst - and...?

And btw - how Shadowstrike modifies damage?
If it is just + to crit multiplir, then it's not that good, and not what I thought.
I thought it multiply ALL crit damage on 1.7 or something.
Like you hit initially 100, then crit multiplier 1.5, and THEN 150 miltiplies on 1.7 from Shadowstrike.
If not, it isn't worth investment of 16 clssspoints.

[stinkstink]

The critical damage modifier from Shadowstrike is added to your base crit mod, it doesn't have a multiplicative effect.

[GlassGo]

So I consider it is too much of hassle with Shadowstrike on Insane.
Thanks one more time.