Favored daughter of Mother Night, queen of the Hags in Barovia, and one of the most powerful dark forces in the valley, Baba Lysaga appears to be little more than a spindly old woman with greenish, sallow skin and unnaturally long fingers. Her voice is high pitched and rough and she usually appears to be wearing filthy robes. She lives in a decrepit hovel, known as the walking hut, and mostly sticks to the swampy areas of the valley.
An ancient being, Baba has been a resident of the valley for two thousand years. She has made attempts to raid the Amber Temple, with little success, and has clashed many times with the Silver Order and other forces throughout Barovia. With the coming of Strahd, Baba withdrew to the swamps to contemplate how the sudden plunge into the realm of shadows might benefit her. Being partially fey, the shadow realm's proximity to the fae wilds and far realm were advantageous to the hag queen.
Baba's greatest rivalry has been with the three goddesses of the Fanes. She has long wanted their power, and went Strahd defeated the three sisters, Baba captured the reincarnated Laura Blacktongue. She bound the immortal to the ceiling of her bathroom and bled her daily, filling her tub with the blood of the swamp fane goddess. Baba would then bathe in the blood, absorbing small amounts of Laura's power. However, she realized it would take millennia to completely absorb the power and came up with a plan to track a druid into granting Baba their powers so that she might steal the power of the fane.
When the party passed by her hut and decided to investigate, Baba seized on the opportunity. She had been watching the party from afar and had realized that Haleigh was the druid she needed for her plan. She convinced Haleigh to accept a trade, a hag's bargain that would give Haleigh power as a warlock in exchange for her druid abilities. Haleigh accepted and Baba immediately fled to try to claim the power of the swamp fane.
The party gave chase and learned that her plan was to take the power of the fanes. Baba intended to replace Strahd as dark lord of the land. Fortunately, the party was able to defeat both Baba and the fane guardian and restored Laura Blacktongue to her rightful place. Baba escaped as a swarm of insects and swore revenge on the meddling adventurers.