User blog comment:JmLyan/Jace, the Mind Sculptor/@comment-7006769-20130409074856/@comment-3974211-20130409195500

Her Light Binding and Lucent Singularity, yes, but not Final Spark. Skill shots are not innately projectiles. Although, Lucent Singularity is a ground-targeted skill - it's merely the animation that looks like a projectile. Cassiopeia's Misama is essentially the same without a visual projectile.

Not because of balance issues, but I've managed to convince myself the skill is unlikely to work without upsetting a lot of players.