This tree was created for a homebrew gift exchange on Discord. It was inspired by the key phrases living weapon, immortal, and creature type.
I could see this as something various groups would fight over, as it provides an endless supply of random magical weapons that last a year...so groups would have to return on a regular basis for more weapons, and would have to figure out what kinds of creatures said weapons are better against.
This magical tree provides both a reason to fight and the tools to do so.