Lane harass and early tower pressure.
Durability and crowd control
Every 4s your next attack on a champion deals bonus damage, heals you, and permanently increases your health.
Charge up a powerful attack against a tower while near it.
After taking damage from an enemy champion, the next 3 spells or attacks you receive deal less damage.
Gain permanent health when enemy minions or monsters die near you.
Improved attacks and sustained damage
Takedowns on enemies grant permanent Attack Speed.
Deal 7% more damage to low health champions. Gain AD/AP after kills or assists.
+9% Attack Speed
+5 AD or 9 AP
Grasp on Caitlyn allows you to constantly harass in lane for a bit of extra damage as well as a small amount of lane healing sustain.
Demolish on Caitlyn is great for punishing lanes where you are able to keep pushed for early tower plating gold.
Bone Plating on ADCs is huge to helping you survive early burst damage, especially when paired with the extra HP from Grasp.
Overgrowth's bonus HP scaling is synergizes well with the extra health from Grasp to help you survive early damage and scale to a point where you're able to get 3+ items.
Attack Speed is arguably the most important stat on Caitlyn as it will help you get more passive headshot attacks off as well as make Grasp procs easier to use.
Coup De Grace's damage amp is a staple for any marksmen's mid-to-late game damage arsenal.