Slay 5 Sundered Emerald Colossi.
The emerald colossi are the greatest of the Stone Mother's creatures. They must be the first to be removed from the field.
I brought Stonefather Oremantle's axe for just this task. Use it to sunder the giants.
That should bring them down to a more manageable size for you to finish off.
You will receive:
You will also receive: