Looks fine, i guess.
This spell looks like the 3rd level(cleric list) "searing light", only inflicting slightly less damage( 5d6 vs. 5d8), but not allowing a save, while the searing light requires a ranged touch attack.
There´s nothing abusive in this spell. And I could say its a weak ofensive spell for a 3rd level arcane list, since it works similarly to 'magic missile", while it's 2 levels higher.