In the latest version, Shadow Hands appear to not be working... mobs that I attack will not be targeted by my pets who have the Shadow Hands enchantment. In my current case, Grizzly Bears and Elephants from Alex's Mobs are showing negative results. Replication is simple: enchant a collar tag with Shadow Hands, apply it to a pet, and attack an entity.

I also would like to note that I'm playing with these two mods as well as Apotheosis, which increases the max level of Shadow Hands to 8. I don't think this contributes to the bug but I can't be sure.