Sorin Markov

Sorin Markov is a vampire planeswalker who was born in Innistrad.

Zendikar
Long ago, Sorin helped trap the Eldrazi in the hedrons of Zendikar. When they awakened, he rushed back to Zendikar to help trap them. However, because of the unexpected betrayal of Nissa Revane, who freed the Eldrazi in hopes of saving her plane, Sorin failed and left the plane.

Innistrad
He was born in Innistrad. He is of the Markov Bloodline. He created the archangel Avacyn, to keep the balace between vampires and humans on the plane of Innistrad. He did this because he knew the vampires would turn on themselves after all humans were diminished.

Spark
Sorin's spark ignited after he became a vampire. When he was human, his grandfather, Edgar Markov, was experimenting on how to rid the land he lived on of famine, and to live much longer. Desperate, he asked a demon for help. The demon gave him an idea, and in a blood ritual, he turned many of the commoners to vampires. Among them was Sorin. The shock of becoming a vampire ignited his spark.

Trivia

 * He claims the vampires of Zendikar feed too fast, while he savors the kill. This may be because he is from Innistrad, and the vampires there have a different culture than the vampires of Zendikar.