The main reason Trinity Force is a great pick is because on basic attack hit it procs the speed buff which gives you a small boost to your Martial Poise. Sheen is also a great item because it gives you some mana early game, bonus damage, and when added with a critical hit, Statikk Shiv and the Movement speed from Zeal and attack speed never hurt.
Thanks for the Input!

Trinity Force shouldn't be a viable item. Kalista doesn't have AP skills and she has Martial Poise, Phage won't help a lot.
I don't think Sheen will help you,but if you want to use it,you should use Iceborn Gauntlet.



Yeah,it's not a bruiser build.

Shouldn't call it a bruiser. Should get a Last Whisper in there somewhere, especially if you're gonna be laning against tanks. Guide is fairly short, and you need to add sections about runes, masteries, teamfighting, laning, item sequence, and more match ups. Otherwise guide is good. Also, your cons outweigh the pros.