Thanks Laithoron For that Fiendish Codex Reference That really gave me some Idea's on this. Here's what I cam up with so far. It's in the really ruff stage and this is a first draft and I want any Ideas/ Criticism to help balance this out for Pathfinder
Here's what I got so far
Demon Sword NPC
Feats needed: Demon Sword Wielder
Demon Sword Wielder
Prerequisites: The player must make a pact with the Demon sword or Bend to his Will See Special Below
Benefit: Upon Taking this feat The demon sword's will start to attune to its wielder Gaining abilities and levels along with its new master (See Chart)
Special :The player has two options to wield a Demon sword they can make a pact with it or the Player can try to Redeem/Corrupt the sword
Pact: To Form a pact the Player must be the same Alignment as the Player or share in its goals
Redeem/Corrupt: If the player does not meet the above Prerequisites the sword will fight him using It's ego DC Against the player to either Foil or get away from the Player. The player must overcome the Ego of the weapon as Detailed in Pg.535 to wield it or use any ability's.
To make a Demon sword the player uses the NPC Ability Scores chart (PFPG 453) for Stats
after picking race and weapon the player is then free to use the said chart below to make up the npc weapon properties
Char Level /Demon sword HD /GP Value /Special Abilities
........1.............1..............2000..........Speech, Alter Self
........2.............1 .............3000..........-
........3.............2 .............4000..........-
........4.............2 .............5000..........Channel Class Ability 1/day
........5.............3.............6000..........Alignment change*
........6.............3..............7000..........Random Item Power
........7.............4..............8000..........-
........8.............4..............9000..........-
........9.............5..............10,000........Channel Class Ability 2/Day
........10.............5..............11,000.......Alignment change* , Random Item Purpose
........11.............6..............12,000.......-
........12.............6..............13,000.......-
........13.............7..............14,000.......-
........14.............7..............15,000.......Channel Class Ability 2/day
........15.............8..............16,000.......Alignment Change*
........16.............8..............17,000.......Random Item Power
........17.............9..............18,000.......-
........18.............9..............19,000.......-
........19.............10..............20,000......-
........20.............10..............21,000......Random Item Purpose
------------------------------------------------------------------------ *assuming that the player meets the requirements to use this ability
Char Level: Level of the Player
Demon sword HD: the amount of HD the Demon Sword has. It can take any class that is available to it. It's HP also reflect onto it when it weapon form for Hit points for sundering purposes.
GP Value: this is a free pool of gold that the Demon Sword can use to enhance itself. to use the pool it must meditate for a number of days equal to every 1000GP the sword becomes inert becoming just a masterwork sword until it is finished with its mediation. if the sword takes any damage that overcomes its harness it must make a concentration check DC=New caster level of item or lose all of its progress and must gain a HD before it can try again.
Alter Self (SP): the Demon sword can at will change into it's set Humanoid form once it's race is chosen It cannot be change. The sword can remain in its humanoid form for as long as it wishes. changing its form is a full round action
Speech: the Demon sword gains the Speech Item ability as detailed in Pg.533
Channel Class Ability's (Su): Upon reaching 4th level the Player can use the Demon's Class Ability's as his own. The player must pay for any Pluses and minus that the sword Gives any universal Minus will reflect on the swords power and It's human form. For Example say that the Demon Swords is a great Axe with levels of Barbarian the Player uses it's rage ability to gain the rage bonus of that class after the rage wears off the sword is Fatigue It suffers the -2 to Attacks Saves and Skill checks so when the Player attacks with the Axe he suffers a -2 to attacks saves and Skill checks thou he Himself is not Fatigue.
Alignment Change : Upon reaching 5th level and 15th level. The Player can bend the weapon to His will the Weapon must make a Will Save DC= (10 + 1/2 Players HD + Wis) A Failed means that the weapon shifts it's aliment one step towards that Player, And may be more Cooperative towards that Players way of thinking and Goals
NOTE: the Player must of had the sword in its possession for at least 3 levels in order to use the Alignment change ability
Random Item Power At 6th and 16th Level the Demon Sword can roll on the Intelligent Item Powers Table on Pg. 534. The swords gain access to the ability including the bonus to Its Ego DC
Random Item Purpose: At 10th and 20th level the sword can roll on the Intelligent Item Purpose Table on Pg. 534. The swords gain access to the ability including the bonus to Its Ego DC