The perfect Maple boss fight

The thing is just making weak to lightning/poison isn't good enough for mages to be wanted. They'll still get outdamaged by NLs, BMs, heroes and god knows who else. It needs to have something more...maybe summons 14 monsters at once that genesis misses? 14 strong monsters (two types, one weak to fire and other to ice) that get in the way would be annoying as hell for attackers and archmages could actually speed things up?

And 5k touch isn't challenging for ranged classes at all o_O HB..?