Every marksmen early in the game that has a bigger range then you is a bit trouble to play versus, but later in the game(mid-late) it get's a lot easier you deal ton of damage and it get's pretty fun and easy to play Kalista and to 1v1 someone.

Kalista is a fun and not so easy champ to play, so you will be bad few games, try some normal's with a friend to synch better and to get a hang of her.

Pros:
1)Easy to lane
2)Poke is really strong even late
3)Her ultimate saves your support if you dive wrong or get ganked
4)You can use her Q or auto attack's to jump over the wall's or run away and chase the enemy
5)She's just fun to play

Cons:
1)She is hard to learn and hard to master
2)If you poke to much you will go "oom" fast
3)Sometimes your support will not follow up with the ultimate good, gives your enemy a chance to run away
4)If your bad at step attacking she will be not so usefull to you
5)Easy to kill early and late, if you don't have GA or some other tanky items

For everyone looking at my build, i know it's not much, but you don't need everything, you know what masteries are and what you runes are so you don't need me explaining all of that, feel free to change something in the build i am still testing it my self it work's great for me, get a hang of the champion and you will have a lot of fun and be really strong, if you like the build give it a like it means a lot for me really.
Hope you all found this build good, right now im Diamond 5 and for me i think it's a really good build for Kalista you can change some runes and masteries if you don't have or think some others are better, big thank's to everyone have fun in the summoners rift and good luck! ♥

Please do let me know what you think of the guide, tell me what you should change in the build!
One more time Thanks to everyone who voted or at least seen my build and tried it!
Love you all! ♥