soul based weapons / amulets / armor ravener

[Count Coltello]

So I like the soul stuff the ravener gets but was curious about some things:
Is there any other creature that gets the soul stuff?
Next is tough,
I want to make a weapon that has to consume so many souls a day or "bad stuff",
If it consumes it's souls "good stuff"
Or amulet or armor

Or a full set or armor weapons and ring/necklace for a soulmancer?

[Eltacolibre]

many other creatures have soul stuffs, but just from the top of my head:

-Night Hag, get bonuses for having a soul in their stone.
-One of the Balor Lord power is soul Swallow, eat somebody and transform them into a demon.

I'm sure looking around you can find way more than that.

[Count Coltello]

Well I. Mostly looking currently at weapons based around:

Soul Consumption (Su): When a living creature within 30 feet of a ravener dies, that creature's soul is torn from its body and pulled into the ravener's maw if the dying creature fails a Will save (DC equals the save DC of the ravener's breath weapon). This adds a number of hit points to the ravener's soul ward equal to the dead creature's Hit Dice. Creatures that have their souls consumed in this way can only be brought back to life through miracle, true resurrection, or wish.

A sword that is "hungry" if it doesn't eat it refuses to work

Edit: maybe 1 soul and it gets +1?
10 souls and gets flaming (or something)
200 souls and it gets +5 and flameburst?

I dunno if anyone has suggestions