Illithia, Pure Faction 500
no portions, kingdom level 10, hoard 100, equipped Anu + 2xNysha medals
Team: Ilithian Colossus + Hive Mind + Illithian Servitor + Hive Mind, Fell Banner (+2 yellow, + purple, - green)
[6914,6916,6915,6916,3061]
It took me just 2 attempts (first time lost some troops in the second room).
In the boss room I started casting my Servitor only after all the magic was taken from the enemy.
First I took magic from Servitor and Colossus (casting my Hive Mind or Colossus whenever they are full), then from Mind Eater. From enemy’s Hive Mind at the end, but only because I managed to match all the yellow on board before the enemy most of the time (if the enemy’s Hive Mind was anywhere near to cast, I would have taken magic from it before Mind Eater).
After enemy was left magic-less, it was just a slow battle with matching skulls and casting Servitor.