@crawlingdeadman: I think he counts on valkyrie&merc to kill the stuff in the worst case. Such character is quite safe, but indeed slow, which is probably not what iLi wanted.
With mere 24 points invested, LF is without doubt the strongest mass-killer the game has to offer, which is a solid base for large variety of builds. Fire, cold or poison need almost twice as big investment to be viable. If you max CS (in addition to LF), you obtain a potent boss-killer.
If you seek safety, high level Valkyrie is a powerful tank, which in return gives you more freedom in merc choice. Decoy is an excellent scouting skill even with minimal investment.
Physical attacks depend heavily on weapon and also need a large dexterity investment to reach decent damage which results in less life. Still, MA is a cheap backup for most amazon builds.
=> I vote for single-element magezon, i.e. one elemental attack (preferably LF+CS, but FA+CA, IA+EA, or PJ+pJ also work), tough Valkyrie, few points in D/A/E (1-4) and Pierce (3-6), splitting the remaining points among Penetrate, Critical Strike, MA, or even Decoy according to your needs :wave: