Make a tier 2 champion LCS viable.

: Illumination: _Lux's offensive abilities mark all affected enemies with light energy for 6 seconds after damaging them. Her basic attacks or Final Spark.png Final Spark consume the mark, dealing「 10 + (8 × Lux's level) 」(+ 20% AP) magic damage to her target. _

Additionally, it deals 20% more damage per target hit up to 100%. This effect expires after 4 seconds per hit.

Lucent Singularity: _Active: Lux sends an anomaly of twisted light to the target area, Slow icon slowing nearby enemies and granting Sight icon sight of the area around it for up to 5 seconds. At the end of the duration or if Lucent Singularity is activated again, the singularity detonates, dealing magic damage to all enemies in the area. _

Lucent Singularity's cooldown is reduced by 1 second for every champion it strikes.

Edit: I forgot LC$ mobility. Using Lux's wand after it strikes an ally lets her blink to the first effected target.