Here's all the augments for all the Monstrosity necks (this one is the best): http://www.bluegartr.com/threads/117318-Monstrosity-Abilities-and-General-Mechanics?p=5989471&viewfull=1#post5989471
Okay, I admit, this is pretty impressive. I'm curious now to what the other augment paths are for this item as well as other Monstrosity items. There's really no info on BG Wiki or FFXIclopedia. Anybody care to share?