It is just one of the few spells/powers that were never added or isn't playable.
I'm more interested in checking out the Conjured Arrow Spell!
It's a conjuration based offensive spell. Even if the name suggests it has something to do with arrows and archery, it's a slow moving ball of magical energy. It doesn't cause a lot of damage but it staggers opponents so it's like using lighting based attacks with two perks invested to unlock staggering effects!