Summary/explanation
High Ability Damage (AP): Lux deals a large amount of magic damage with her abilities, especially if built with ability power (AP) items. His ultimate ability, "Final Spark" (R), can make a huge impact in the game and eliminate multiple enemies with a single cast.

Crowd Control Ability: Lux has a crowd control ability in her kit. His area stun with "Light Binding" (Q) can immobilize multiple enemies if connected correctly, providing opportunities for team plays.

Long Range: Most of Lux's abilities have considerable range, allowing her to stay safe while dealing damage to her enemies. This is especially useful in the laning phase and in team fights, as it can contribute to combat from a safe distance.

Protective Shield: Lux has a defensive ability in her "Prismatic Barrier" (W), which can provide a shield to her allies and herself. This shield can be useful for mitigating damage and protecting your team during fights.

Map Vision: Lux's "Lucent Singularity" (E) ability provides vision in the area where it is placed. This can be useful for controlling the map, keeping an eye on important targets like Baron Nashor or the Dragon, and detecting enemy ambushes.

Utility in the Support Role: In addition to her ability to deal damage, Lux can play an effective role as a support thanks to her ability to provide crowd control, shields, and additional vision. His "Light Binding" (Q) ability can be especially impactful in the laning phase when paired with a teammate.

1-Always apply the passive
2-Dont use al your mana in lane
3-Dont disrespect some champs