When you make a new world you're supposed to get the enigmatic amulet if you have the enigmatic legacy mod, but you don't. If it's a balance thing, I'd at least add a way to obtain it.

I'm doing some testing of reenabling the enigmatic amulet but it would require DISABLING corail tombstones player gravestones to work properly with the ring of seven curses.
I do not know how the resulting item that comes from dying with the enigmatic amulet equipped reacts if you die and there is no place to spawn the entity, or in a protected ftbchunks claim. If you die in another player's area, are you stuck retrieving your things?
All things we need to examine before saying a 'yes, we can reenable/set a crafting recipe for it' or 'no'.

Not to mention enigmatic legacy doesn't seem to recognize curios slots when equipping your gear after getting it back from this entity.

For now, its gonna remain disabled.
If you want it for yourself, go in the enigmaticlegacy config and switch enigmatic amulet to TRUE.