Volvers

From MTG Salvation Wiki

Volvers were mutant abominations that resulted from the Rathi Overlay. Volvers were particularly noteworthy in their counter-evolutionary synthesis of three different colors of magic -- two allied and one opposed. During the darkest days of the Phyrexian Invasion, when such strange alliances were a necessity, the disciples of the enemy-color schools of wizardry saw these creatures as an affirmation of their studies.