Ekajati
Ekajaṭī or Ekajaṭā, (Sanskrit; Tibetan: ral chig ma. English: One Braid of Hair), also known as Māhacīna-tārā, one of the 21 Taras, is one of the most powerful and fierce goddesses of Indo-Tibetan mythology. According to Tibetan legends she is an acculturation of the Bön goddess of heaven, whose right eye was pierced by the tantric master Padmasambhava so that she could much more effectively help him subjugate Tibetan demons. Ekajati is also known as 'Blue Tara'. She is generally considered one of the three principal protectors of the Nyingma lineage, along with Rāhula and Vajrasādhu (Dorje Legpa).
Read more about Ekajati.