The passive makes her deal bonus magic damage equal to a chunk of her AD, so her auto attacks are like Draven Q empowered Auto attacks. Of course you have to swap targets to continue getting the bonus damage, but it's pretty nuts.
Her Q will automatically crit if it kills the target it hits first, so you're getting pelted with critical strikes for her last hitting, the second shot also has a 100% AD ratio at base, dealing 150% of ad on the crit in addtion to the base damage, if she uses it in unison with her passive she can guarantee who it hits. So I think you can technically use it to double proc love tap by autoing the champion, Qing (Because Q applies on hit effects) a minion, and then the bounce will hit as well applying love tap again.
Her E is super easy wave clear and deals massive harass damage.
Free movespeed on E making it hard to hit her with skill shots, the active on it then gives her a Runaan's hurricane worth of attack speed at rank 1
Finally her ultimate deals 75% of her AD per wave at 12 waves to start you're getting pelted with 900% of her AD if you stand in the whole thing. If that's not enough, each wave has a chance to critically strike dealing 20% extra damage per wave so you're taking 90% of her AD per wave if each critically strikes coming out to 1080% of her AD at 6.
50 base AD + 8 from runes, 8 from Dorans Blade, and 40 from BF Sword makes her deal about 954 damage out of her ultimate as she has no critical strike chance just yet, again assuming you take all 12 waves to the face.