Heaven Concealed!
While the army of Vita spread out to cause pain and suffering too living beings in the world, the Evil Trio themselves were on a different mission. As for what they were trying to do, shouldn't it be obvious?
You didn't really expect the esteemed and noble them to play around with mere Field zones and Area Zones? With their power as Semi-Eternals? With their stats?
My Brother in Christ, without Rank and level suppression, on casual sneeze from them could reduce the main plane to ash. Only by fighting against Rank 7 and above foes could they feel the thrill of what it meant to be alive.
As such, their first target was naturally the Mages Association, which was the number four strongest NPC organization in the entire main plane and the strongest among the power faction.