Muratus del Mur or more commonly known as Mur is the creator of Magicduel.
He was until very recently the sole coder of the game, and is still the driving force behind all of the intresting changes that are made to the game.
Initially when MagicDuel first began Mur was very talkative with players ingame and fighting with them. But after he got busier with the game it was harder to talk with him generally, and fight.
For a long time he was a neutral player, merely working for MagicDuel however recently he has declared himself the permanent king of the Tribunal