New familiars

[Zero]

Impossible to see them. I needed to spoil me since I can't find them. So, apparently, you need to tame the white crow first in the forest ( foutain zone ). I do several run, but never see him.

[Blacktail]

There is an ancient magic ritual involved if you want to tame the new familiars: Turn the lights on, stand next to the open window and play naked.

[Sentient_Toaster]

Raki -- fountain zone in Erebus, which is an uncommon spawn and you'll just need to be lucky; not much you can do about that except keep doing underworld runs w/ a Witches' Treat in hand

Hecuba -- Echo zone in Fields of Mourning, requires not just a treat but prior permission from Hecate, which in turn requires that you have talked to her after having taken each of the other three familiars out for a run AFAIK