Augustin IV
On paper, his position holds perhaps more power than any other in Ravnica, as he served as the leader of its "technical" ruling body, the Azorius Senate untill he was killed by Szadek. Following his death Leonos II took over his position.
Role:
As the grand arbiter he presided over the most important legal cases in Ravnica, at times when such cases are not in session oftan moved from courtroom to courtroom settling deputes.
Unlike many in the Azorius Senate, who pride themselves on their verbosity, he is known for his brief but eloquent tone and strong manner.
Physical characteristics:
Blind, and physically frail, he sits on a floating bench that carries him to his desired destinations. As Grand Arbiter he was protected by a soulsworn jury. (Spirits sworn to protect him "in life as in death")