Today Wizards revealed the art for a card in Mirrodin Besieged called 'Koth's Courier' the art was revealed with the following text:

The sight of the Phyrexian beasts sickens me. They crawled out of the depths of the world - a parasite that steals our flesh and our minds and our souls. I want to fight back. The core of my soul screams at me to lash out, and it takes all of my strength to ignore that shrieking compulsion, because I have a mission. Koth has tasked me with finding survivors in the Tangle. If there are any Sylvok or Viridians left in this forest, I will find you, and bring you to safety, to the tunnels below Kuldotha.

Source: Wizards.com