I'm playing a cunning sneak rogue and am trying to better understand line of sight versus cover. Are the two mutually exclusive?
If they are not, then how can a cunning sneak hide from a monster with only partial cover or concealment since the monster will have line of sight and be able to see the hidden rogue?
Similar question regarding the Armor of Dark Deeds + Cunning Sneak combo I hope to use. I gain concealment w/ the armor and can theoretically hide as a cunning sneak, but monsters will still have line of sight on me, ending the hiding?
Sticky, top of the forum, "Rules of the Hidden Club." Read it and you should understand everything about 4e's stealth rules.
From the forum FAQ, if desired:
'What's the difference between cover and line of effect? Per the cover rules, “a line that runs parallel right along a wall isn’t blocked”. However, “If every imaginary line you trace to a target passes through or touches a solid obstacle, you don’t have line of effect to the target”. So two medium opponents separated by a 5’ wide square column technically don't have superior cover against each other, even though line of effect is blocked.'
After thinking about this a bit more, I'm now convinced that the rules are unrealistic in allowing cover (in addition to concealment) to assist in becoming or remaining hidden. Cover is supposed to be just physical barriers between two creatures, but the physical barrier can be perfectly transparent, such as a wall of glass. And it's really weird that you can become or remain hidden just from being behind a wall of glass.
Concealment makes more sense, because concealment is stuff that prevents you from being seen. (Or, more generally, detected? Can smells provide concealment from your scent?) So, it makes sense that you can become or remain hidden behind a thick fog, even though there's clear line of effect (no physical barrier).
The issue though is that the vast, vast majority of cover is also opaque, and that the system math breaks down a bit if you allow the same effect (standing behind typical cover) to provide both cover and concealment, which do stack.
They want there to be a distinction between being behind an arrowslit and being behind an arrowslight in a fog, mechanically. Granting cover the effect of the corresponding concealment makes cover too strong for attack rolls.
That this has a nonsensical application to transparent cover and the stealth rules is collateral damage, but much less severe than the impact on the attack mechanics.
So if my PC is hiding behind a table (cover) and there's smoke from fire (concealment) they don't stack ? I get whichever is the bigger bonus instead ?
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