Btw @Oni_das_Alagoas , regarding non-set variant, have you considered bysmiel? That’s double ravens and reduce your dependance on skeletons. I tried that one and yeah, although they are fragile, they still manage to kill rav in a… not so bad time (but skeletons still die too quick). Unfortunately lost soul version blocks amulet slot so cannot use bysmiel with that.
Here is the link to my test with cold skeletons Please Buff Skeleton CDR in Undead Legion and Maybe Reduce the CDR on Awakened Covenant Set - #17 by minh_pham