Just off the top of my head:
Ok, first off, compared to other 5E spells, this one should be 9th level. Even then, it might be too good - an 18th level lich using this spell auto-kills 8th level characters.
It needs to be concentration. The targets get no save initially, but at the end of each creature's turn, it may attempt a Wisdom save to throw off the spell's effects. (Alternately, each creature in the area gets an initial save at disadvantage, but makes subsequent saves normally.)
I'm a bit dubious of the "non-evil" bit, as 5e doesn't integrate alignment into the system. For example, in my campaign, we completely ignore alignment. I suppose one could change that to non-fiendish, non-undead, or something similar. Or just allow the caster to choose who is targeted by the spell within the area effect.
Dazed = Incapacitated
Weakened = Disadvantage on all Strength-related skill checks and saves, all Strength-based weapon attacks.
Paralyzed = Paralyzed
Killed = Dead