Quote Originally Posted by Shinoskay View Post
I have the option to start with child of shadow (move ten feet and you are considered concealed as shadows wreath you) and nimbus light.

nimbus light is 15 feet of light (5 normal and 10 shadowy).

Assuming direct line of sight, if its night and im in the woods, and have the numbus active, could something from 50 feet away see me?
It depends on how dense the woods are (DMG 87). In a sparse forest, the maximum visibility is 3d6 x 10 feet (which gives a 98.15% chance that you will be visible from 50 feet away); in a medium forest, 2d8 x 10 (a 90.63% chance); and in a dense forest, 2d6 x 10 (83.33% chance). If you are in an area of undergrowth, you will also have concealment.

Since you are illuminated, you will not be concealed by darkness. Observers outside of a light source's illumination radius can still see into the illuminated area normally (RC 79). However, you may still be concealed by undergrowth, in which case you can make Hide checks to avoid detection. The observer will have a -1 penalty on Spot checks per 10 feet of distance (total of -5), and if you are in heavy undergrowth, you'll have a +5 bonus to Hide.

On a dark night, a light is automatically visible at a distance equal to ten times its illumination radius, or twenty times if the observer succeeds on a DC 20 Spot check (RC 79). In dim light, these distances are halved. This means it's possible the observer will see your light without being able to see you, and consequentially may mistake you for Saruman the White.

Quote Originally Posted by Shinoskay View Post
(still night time) If I am moving and using Child of shadow, giving me concealment, how close would they need to be before they get to try to see me?
The answer is exactly the same, except that if they are able to see you, they will have a 20% miss chance against you. Your concealment will also be redundant with any concealment provided by undergrowth.