Hello, I was doing some experiments with evoker fangs and found a tag called OwnerUUIDLeast and OwnerUUIDmost. When an evoker spawns in these fangs, this tag works, but when trying to spawn in evoker fangs with commands, these tags are nonexistent and do not appear in the entity's data. I am creating a wizard that summons fangs and the owner tag is important for giving kill credit to a player who killed someone with fangs.
The command I used to try and summon the evoker fang is:
The Meaning of Life, the Universe, and Everything.
Owner tag is used to refer to the Evoker that spawned the fangs. I think the problem is that no entity exists with that UUID. You should probably try using '/execute store' to read the UUID of a player and store it in the fang's Owner tag