Janus

Janus of the Synod was one of the chief members of the vedalken Synod of Lumengrid on Mirrodin. Janus was himself the vedalken's chief representative to their master, Memnarch. Janus was initially defeated by Glissa Sunseeker as he visited her in the Tangle, but Janus kills Kane via a Disarm spell. (Kane was a Viridian elf. Glissa then cut off two of Janus's fingers.

She later uses those fingers to gain access to the Pool of Knowledge.

Glissa and Janus battle again at the Pool of Knowledge and Glissa kills Janus.

Trivia

Janus was also a Greco-Roman god with two faces, often alluded to in literature as a symbol of duplicity.