When I played as Tebryn long ago, got all 4 horseman and (old) Avatar near or in my border, but horsemans were killed by Mordeo, and Avatar followers were destroyed by my Eaters of Dreams, High Priests, Mordeo and of course my favorite Abashi. Next I sacrificed Mordero and tons of disease corps to injure Avatar and killed him by Abashi. But before Avatars attack I created Blood of Phoenix, so all my living units (eaters of dreams minotaurs, crossbowmans, priests, assasins etc.) killed by AC 90 returned to my capitol. Also they captured only 2 of my cities, in the edge of my empire, because I transported a few tar demons to nearest cities by Nexus 
