Valkyrie's Javelin

[Special Active] Instantaneously materialize 6 Black Javelins into the air and crash them down onto enemies, scorching the ground in explosions.

Prerequisites

Skill Lv	Max Hits	Damage	MP Usage	Cool Down
1	Each javelin hits once. Each javelin's explosion can hit up to 8 times.	333% physical damage, 62% magical damage	200 MP	10 seconds
2		399% physical damage, 74% magical damage
3		466% physical damage, 86% magical damage
4		532% physical damage, 99% magical damage
5 (M)		632% physical damage, 117% magical damage
6		732% physical damage, 136% magical damage
7		831% physical damage, 154% magical damage

Valkyrie's Javelin is unlocked through the Intermediate Branch Skill Quest. The quest can be obtained at Lv30 from Camilla, the PvP NPC.
This skill can be used on the ground as well as in the air.
Definitely one of the best Boss/Mini Boss killing skills in the game, often doing more than some 300 MPs on slightly large or bigger sized bosses; however it does little damage on the few small bosses in the game such as Chole and Spriggan.
It is best to use this on opponents that are grounded in order to get the most damage out of it, though it's even better if they're Stoic and grounded; but you could use it on a target that's just been slightly lifted as the Javelin hits will push them to the ground, but if used while they are highly airborne, they may avoid some of the explosive damage.
Very effective on bosses that cover a large horizontal areas, such as the Nasod Inspector, the Ancient Bone Dragon and the Coral Sea Serpent.