Hello and welcome to the server!
Blood Magus a very interesting class to RP, it offers a lot more than just the mechanical advantages.
As for the KoS (Kill on Sight), it only applies when the BM is casting those spells at that very moment. If the people part and then later meet up, the BM can not be attacked (IE must be a direct connection to the spellcasting). I know some BM's who do not hide their evil spellcasting at all.
KoS are Blood Seeking, Awaken Blood and Bloodburst (Bloodwalk might be but its harmless). These are the only ones giving alignment shifts to CE (they are not constant but do occur every now and then).
Blood Component does show that 1 dmg which shows up in the combat log but it does not have to be obvious. The description is a "pinprick" and there are many ways to injure oneself without making it obvious.
This should not be picked up from the combat log and people ICly going "Aha, blood mage!". Ask what your character sees, if anything. If it is 3 dmg, its bloodseeking and is always obvious (it has its own VFX).
The addiction would be something similar to what any mage goes through; the promise of power. While usually, power is quite hard to obtain... as a BM, every living vessel around your character is a source of power. But it is up to your own interpretation. How someone deals with the promise of power can vary but as mireigi mentions, mages do have high willpower and high concentration. Perhaps have something which breaks all that now and then? And with each level of BM your character has, it becomes more and more difficult. BMs are considered especially vile as they do tend to go crazy...
Osaron wrote:One is it possible for a blood magus to be a sorc? I feel like given the fact that my PC will slide into madness that sorc fits better though it could very easily be a wizard as well.
It can be any. I always have seen sorcerers as more prone to giving in to emotions, they do not THINK, they -FEEL-

. A wizard could with his intelligence justify his powercraze with weird logical lines of thought. Any mage can fall into madness. If you are new to mages, I would lean towards saying to make a wizard. That way, you are not limited to the sorcerer's short spell selection and can try out every arcane spell in the game as a wizard.
Osaron wrote:The second is I am seeking a reason for him to go down this path and haven't really found what I seek when it comes to blood magic. Would it be make sense that he went down this path as a way to extend his life? Clearly necromancy would make more sense for this.
The lorebooks says that a BM must have been killed and then raised. That is when the blood magic surfaces. However, I know someone else disagreed with that and it could be unlocked... It is up to you, that bit. A character could have discovered blood magic somehow and then decided to continue on that path. I think trying to extend the life is a good reason. There is a spell which is of the school of necromancy called
Steal Life. Your character could try to research a spell similar like that but focused on use of blood (ofc you would never finish research it during your time on the server, nor is your character in danger of dying of old age! ...but it is a good goal.).
Osaron wrote:The last for now! Is after reading the server rules I do not wish to push the bounds of the pg setting, but as the whole concept of using blood is some what gory, and one of the abilities is rather gruesome I was curious if some of the vets could give me examples of what is considered tasteful and acceptable on this server.
If you are worried, a good tip is to not go into overly detailed descriptions. Emoting something like for Awakened Blood:
*Your blood twists and turns inside you and suddenly escapes and gushes out through your skin for a brief moment, spraying blood on the walls and floor.*
You can leave it as something like the
Avasculate spell description:
You shoot a black ray of necromantic energy from your outstretched hand, causing your foe to violently purge blood or other vital fluids through his skin.
It does not go into details at all but the words "violently" and "purge blood and fluids" makes us all think it is very painful and very unpleasant. Most people can fill in those blanks themselves.
Honestly, if you are PvPing someone or grinding, you do not really have time to write out emotes! But if you do have the time or manage to find a hostage of sort, it is nice to write out what the spell looks or should feel like as those with low spellcraft can not even see in the combat log what spell you cast, so it is nice to tell them so they can RP appropriately.
If you have not read the expanded background on the BGTSCC wiki page, please do so. There is some RP fluff there which might be useful. I believe Rasael put it together from the FR novels as the lorebooks are a bit lacking when it comes to it.
http://bgtscc.wikia.com/wiki/Blood_Magus