My intelligent weapon
Alyssa
was once an elven druid destined to destroy the demon prince but was run through with a sword enchanted to take control of the body it was lodged into the magic backfired and instead of the sword possessing the body the soul possessed the sword.



The sword can take the shape of any weapon.
The sword can take the properties of any magic weapon the wielder wants (of the wielder's level or below)and gains levels in in that state but once chosen it cannot revert until player dies or retires from adventuring.
When wielder holds the weapon a tribal pattern forms up the wrist (the pattern changes depending on its mood(happy it is bright and flowery with hues of green and blue, sad- looks like your arm has become an old tree is dark brown and black, angry- looks like brambles and tingles slightly where the thorns are))
when put on falls or otherwise ends up on the floor plants grow around it depending on its mood depends on the plant see above (sad- all plants are withered dying)
It's shadow is purple naturally but also changes depending on mood

Lvl 1 +1
Weapon: Any
Enhancement: Attack rolls and damage rolls
Critical: 1d6 per plus
Power (Daily): Minor Actoin. You gain dominance(Save Ends) over a creature hit with any skill with this weapon used as either an impliment or weapon(when magic weapon properties are chosen this power is replaced by the power of chosen weapon)

the whole demon prince thing fits with my current story but it can be edited for what ever you want ^_^

and this is the peak of my creativity for today lol

i should clarify the level system i'll use the holy avenger as an example the holy avenger at lowest is lvl 25 that is +5 and it is a +6 at lvl 30 so when the wielder chooses the sword to become a holy avenger they will have to be at least level 25 to have the lowest of +5 but when the wielder reaches level 30 it will become a +6 holy avenger