Hi I'm VNTRevolution and I main bot lane. I'm just doing this out of fun because its the morning and I don't feel like playing League but want to do something pertaining to it. Apologies if there are any messy spots throughout this guide I'm a noob to Mobafire and this is my FIRST guide.

PROS

Insane stacking for Rend (E Skill)
Very fast
Excellent kiting
Good fighter
Late game phase is powerful

CONS

Weak laning phase
Needs synergy with soulbounded ally.

Not much to say besides choosing Heal or Barrier to your preference.
I like Heal because like I said one of the cons is "Needs synergy with soulbounded ally" so this would help quite a lot in case your support makes a mistake and it has a nice little movement speed buff.

Martial Poise Her passive doesn't let you cancel autos and if they're out of sight as your auto hits it will count as a miss. This makers her much harder to CS with early game but with Rend (E Skill) it'll make it a piece of pie... or cake...

You also receive an item in your inventory that lets you soulbound an ally which is where it requires synergy. Whoever you're soundbounded with will help you utilize your W and Ultimate
Pierce This is a long ranged skill shot with a short width IMO. It gives one stack to Kalistas passive to Rend and I don't max it because the mana costs just scale up pretty high and it just isn't worth using as much when you're going to rely on more autoing and getting stacks on the enemy.
Sentinel