Bhai's page

So a Wraith is Undead, its melee attacks deal negative energy damage. It doesn't specify that it only works on living foes (Lich for example can deal negative damage only to living creatures).
So, theoretically, the Wraith can hit himself and heal that way, since it doesn't state that he can't do it. And his ability doesn't say that it doesn't work on undead foes.

Am I missing something or does it work like that?

I am playing an Abyssal Bloodrager and i just wanted to know if i could stack these two things to become Huge?

It says in Enlarge Person "Multiple magical effects that increase size do not stack.", but Demonic Bulk is a supernatural ability. Will they work together?

I wanted to pick Ranger with the Divine Marksman archetype, but everyone tells me that it is way more efficient to just pick a Fighter with a bow and then get the feats i want...
1) I just wanted to find out if that's true.
2) I would love to hear some tips on playing a ranged character (any tips you have, don't be shy, they might be found useful by me or others reading this thread).
3) How much do all these different types of arrows cost? http://www.d20pfsrd.com/equipment---final/weapons/weapon-descriptions/ammun ition