The Lakshmi Tantra unusually says that Lakshmi killed this figure. For 10 points each:
[10h] Name this buffalo demon considered a representation of chaos. His killing by a goddess because of a boon that no man could kill him is central to Shaktism and is celebrated in the Navaratri festival.
ANSWER: Mahishasura
[10e] This goddess is usually credited with killing Mahishasura. Navaratri is also known as the namesake puja of this tiger- or lion-riding goddess whose anger causes Kali to appear from her forehead in a different myth.
ANSWER: Durga
[10m] Though Durga wields several weapons, she kills Mahishasura with this weapon that is also the primary weapon of Shiva.
ANSWER: trident [or trishula]
<Mythology - Mythology>