Lightning Fury - This is a high MP shot that should do quite a bit of damage. Unfortunately, its range is very short and it has a high cast time. It is suggested that you use Resonance Shockwave instead.
Cool time is 5 minutes, not 10 seconds as the rappelz-item.com/tag/skill/">skill tip says. Note that people have indicated that this skill sometimes eats your mana and goes into cooldown without actually shooting an arrow.
Penetrating Shot - This skill has an AOE component to it, but by all accounts, you need the targets lined up just so for AOE. Even without the AOE, it still does quite a bit of damage to the primary target.
It does have a high cast time. Cool time is 5 minutes. Note that people have indicated that this skill sometimes eats your mana and goes into cooldown without actually shooting an arrow. Snare of Lightning - This trap causes an AOE lightning damage. This trap is considered useless.