Ezra

What we know

Lady Fiona Wachter's warlock pact patron; also called Mother Night (Session 20 @ 01:08:34)
Transcript epithet: mother of the knights (Session 20 @ 01:08:34)
Fiona learned arcane arts through her and pledged faith for renewed resolve to bring peace to Vallaki (Session 20 @ 01:10:00)
Fiona: no demands misaligned with her own interests (Session 20 @ 01:10:00)
Night hags could detect Fiona's pact nature—reason she could not enter windmill with party (Session 20 @ 01:06:42)
Tarokka (Myrmidon): "The treasure belongs to Mother Night" — matches Ezra (Session 6 @ 02:52:00)
Fiona: also called Lady Knight, goddess of the mists—distinct from Ladies Three (Session 21 @ 00:53:51)
Father Lucian Petrovich: Mother Night counterpart to Morning Lord; does not offer sanctuary like Morning Lord (Session 21 @ 01:24:11)
Fiona: serving Strahd von Zarovich is not in Ezra's nature; refused full tale (Session 21 @ 00:53:51)
Fiona cannot contact Ezra on demand — deity whims are fickle (Session 21 @ 00:57:58)
Fiona: not something she has known Ezra to do — bring outsiders via mists to pit against the devil (Session 21 @ 00:57:58)
Imp familiar Majesto relays messages (Session 20 @ 02:05:38)

Not encountered directly; named by Lady Fiona Wachter en route to Old Bonegrinder Windmill (Session 20 @ 01:08:34).

Unconfirmed: whether accessible to others in Barovia (Session 20 @ 01:08:34)
Unconfirmed: whether mists that brought party to Barovia relate to Ezra (Session 21 @ 00:56:46)
Unconfirmed: bone-throne woman in Irredel's dreams — not identified as Ezra