Ability build - one target ranged aura

[Not another shrubbery]

Originally Posted by lexington

Attacking a single target at a distance is not an aura, it's a normal innate attack. To do it without having to constantly take an action he should take Compartmentalized Mind (One Ability Only, -30%).

You could still do it with Aura, though. The OP's first build should do what he wants.

Originally Posted by Gnomasz

1. Going all along with FAQ: Toxic Attack (Aura, +80%; Melee, C, -30%; Area Effect, 2 yards, +50%; Malediction 1, +100%; Telepathic <psionic and works only on creatures with mind>, -20%) - but it's damaging everyone in the area. I'm not sure how much would be "nearest target only" limitation worth.

I'd peg that final limiter at about -20%, but I could be convinced that it was worth a bit more.
Then you could just choose the build that cost less for the size of the attack.