Harrier: Valor marks an target every 5 seconds, whenever you attack an vulnerable target you do additional damage (15 +10* lvl+half you ad).
This passive ability that allows Quinn to farm a bit easier due to the fact that it does some extra damage, but needs some getting used to.

Blinding Assault: This is an skill used for harrasing your opponent. While Quinn] does damage to you opponent you also blind them making sure that they miss their next auto attacks. Because it blinds the enemy target never use it on an AP caster like Lux because she does damage with he abilities and the blind therefore has no effect. It would be shameful to make this mistake in a team fight, because this can determine if you win the team fight or not so try using this ability on the enemy adc or if the adc isn't around on the ad top or ad jungler.

Heightened Senses: This ability has an passive and an active effect. The passive effect is that whenever Quinn attacks an vulnerable target your attack speed will increase, this can be helpful when fighting 1v1 or while farming. While active An area is shortly revealed for 2 seconds. This can be very helpful for setting up ganks or just making sure a bush is safe for you to go in.

Vault: Quinn jumps to a target dealing damage and slowing the enemy's movement speed and targets the enemy with vulnerability.

tag team Tag Team: Quinn transforms into Valor for 20 seconds a melee fighter gaining additional movement speed and giving her the ability to move through units.
This skill should be used for closing gaps or escaping from ganks.