Ytho, apparently dead, replaced with her former servant
Siez, kicked due to allegedly committing unnecessary atrocities against the mortals
Cain, quit after being at odds with irresponsible peer witches
Lucy, sealed herself away after discovering a thing she's not supposed to know
Cain is one who quit after getting sick of the mannerism of the majority of the Coven. The 'vibe' wasn't really for them so they went back to their former group of savants, not kicked nor replaced.
They keep in touch with some of the 'dignified' witches though
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Siez, kicked due to allegedly committing unnecessary atrocities against the mortals
Cain, quit after being at odds with irresponsible peer witches
Lucy, sealed herself away after discovering a thing she's not supposed to know
They keep in touch with some of the 'dignified' witches though