My theory was correct! Werewolves are immortal! Even if killed, they will simply regenerate somewhere else in the land.
This must be part of the reason they are so powerful; some werewolves could be ancient and very intelligent! The blood
of a werewolf traps the creatures soul, making it unable to die. Even if its body is destroyed, its soul will be unable
to pass on and will instead be forced into a new body. This begs the question: who is controlling the werewolves? Who
is cursing them to forever wander in their beast form, unable to die? Anyways, I can use the soul trapping properties
of werewolf blood to trap the souls of other creatures. By constructing a bottle or flask of the most valuable crystal
and diamond and filling it with werewolf blood, I can create the phylactary of souls. When it's in my hotbar and I kill
a creature, it binds to the soul type of that creature. Every kill made on the same creature type will steal more pieces
of the creatures' souls, until enough fragments have been gathered to form an entire soul. Once enough kills have been
made, the phylactery will turn blue and transparent and can be used to summon one of the same creature type every so
often, effectively providing an endless supply of whatever creature I can repeatedly slay. I already know that elder guardians,
ender dragons, and withers all have souls much too powerful to be captured in this method.