It will travel along surfaces like the fire or dark sorcery spells, however it's range is much shorter so in most application it looses its luster.
As a sorcerer player, it's unique components seem to be:
- Packs a punch for it's relative FP cost at 25 FP, doing slightly less damage than regular soul spear
- Doesnt stop at the first hit like soul spear, so you can use it to hit through packs of enemies or invaders hiding behind mobs - but roughly 2/3 the range of it's fire/dark 'climbing' spells so hard to utilize this benefit
- It has a long casting time and a delay before the spell's damage beams, which can be either a boon or a curse depending on how you use it. in PvP you can use it to misdirect expected soul arrows to time the spell to hit a player coming out from a roll.
IMO: too many cons and hard to pull off skillful manipulation to take advantage of it's perks to be worth choosing over Moonlight Great Sword or spell arsenal over Crystal Soul Spear/staple spells. I would like to see it buffed with either a boost to spell damage, a knockback effect, a secondary 'tick' if enemy is still in proximity/touching crystals, damage from exploding crystal shards or a 'wall' effect during the shard graphic, ignore shield blocking, or at least extend it's range. Something to give it some additional utility.
It does require 50 int, so it should provide some reason to hold onto it over another spell.