I've always been a big fan of giving PCs in my games non-standard equipment, but now that I need to calculate their full GP cost (to calculate how much their equipment is worth) it's giving me nothing but headaches. So this is about a sword that a PC found in a pretty extreme situation that he barely survived.
+1 Wishformian Greatsword
Wishform: as a swift action this sword can transform into any weapon that was broken using it (mantaining the form of a medium-sized Greatsword, regardless what the original was), but you can't use this ability until after 2 rounds of having already transformed it (that is, you can only wishform once every two rounds)
This weapon was created specifically to destroy and absorb the Nine Swords with their legacy abilities fully unlocked; any alignment requirements of the swords will not need to apply for its wielder to unlock their legacy abilities, and when wishforming you can chose a form that combines any of the 9 swords already absorbed into a single form that combines their powers and penalties.
Effects that wouldn't stack normally do not stack for this form either. For example, if you combine Desert Wind and Faithful Avenger, their enhancement bonuses (+4 and +3, respectively) would not stack, therefore the resulting blade would be a +4 Flaming Burst (Un)Holy cold iron Greatsword. In case there are conflicting properties such as material, the wielder will have to chose at the moment of wishforming.
Aditionally, the sword's wishforming ability will improve depending on how many of the 9 swords it has absorbed:
1 sword absorbed: The sword can change its design. This is more of an aesthetic change, but it can also be used to change its size category, such as wishforming into a Large longsword or a Huge shortsword.
3 swords absorbed: The sword can change its size.
5 swords absorbed: The sword can change its weapon type (axe, spear, etc).
7 swords absorbed: The sword can change its shape completely.
9 swords absorbed: The sword can change its building material.
The sword needs to drink the blood of an innocent to be able to Wishform in a day, and two innocents for any weapon to be added to the Wishform list. If a weapon is broken when the sword hasn't killed a minimum of two innocents that day, the broken weapon doesn't count for Wishforming.
This sword is inteligent, and can permanently merge its mind with that of its wielder but only if he is willing to do it; In case the wielder dies, the sword becomes its own mind once again. The sword is aware that this fusion is the best scenario for it since its primary objective will be imprinted on its wielder, and will try to convince him in any way possible, including sabotage and friendly fire. Even then, it will always present itself as friendly and eager to help, always insisting that the fusion is the best possible idea.
Once merged, the wielder will start each day with -2 INT and -2 WIS until the Wishforming ability is activated by killing an innocent.
The sword will also grant two rituals to a merged wielder:
Ritual of Reincarnation:
Every 6 years, you can pass your consciousness to a new body. There are two ways for the ritual to work: either the victim stabs his chest with the blade willingly, or you must spend 8 hours in concentration, all the while the victim's status must remain as "dying".
After the ritual is completed, your original body dies immediately and the victim's body becomes your own.
Ritual of Uploading:
You can upload your consciousness to the sword, so that your merged personalities become the default personality of the sword.
You must spend 24 hours in concentration. Your body becomes an extension of the sword and it's not your main body anymore, but you're unable to act independently as a weapon without your body. You may communicate telepathically with anyone holding the blade, and can use the Ritual of Reincarnation even after your body is dead, but the trauma of tearing yourself apart from the blade again will result in penalties as if you had just been hit with a Resurrection spell.
Any idea how to price it?
Also my idea is to get a base cost for it and add it to the cost of every weapon absorbed in it. Would this be fair?
Any help would be greatly appreciated!