She wields a long wicked hook and holds macabre blades on her back. Her clothes are stained with old blood and formaldehyde.
She has a lot of dashes, keep that in mind when considering CC and durability. Especially the Exacerbation active.
The W applies a .1-.2 AP ratio to every other ability once it's skilled. Considering whether it'd be easier to remove that so level 1 is easier in lane.
Note that during Mortify (R1), Chronic Pain (Q2) will only apply the damage of one Exacerbation AoE.
Sara is designed as an AP, AD, or hybrid assassin with some light bruiser aspects. She is extremely mobile as long as she's playing aggressively, and gains high offensive potential as a teamfight develops due to her passive abilities. However, her defensive abilities are limited to a shield based on her AP and a number of slows.
She has a short stun akin to Riven's Ki Burst to catch people as she dives in with Chronic Pain, a movement slow on-hit-and-cast for 4 seconds with her shield from Exacerbation, and a much more powerful but shorter movement and AS slow with her finishing move Preserve Specimen.