This comp revolves around Kalista as the main carry in a 6 Duelist comp rather than a Cultist comp. 3 starring Kalista is a priority to ensure she can carry in the late game against 4 and 5 cost units.
Go for this comp if you find a Chosen Duelist and a good amount of Bows. Kalista Chosen is ideal, but you can still get away with something like a Chosen Jax as long as you can find Kalista. Bows are also a strong priority for this comp.
Level up to 4 early if you want to start a win streak. Level up to 5 to try and continue the streak.
If you're weak in the early game, you can opt to save gold and lose streak instead.
At Round 2, level up to 6 regardless of your start. Put together the strongest team you can.
At Round 1, level up to 7. Roll down to stabilize your comp if you are weak. Afterward, save up to hit level 8 and complete your comp.
Once you are at level 8, continnue to roll for Kalista 3 star.
For the early game, you either want to build around Duelists or around Cultists. These synergies are the main support for Kalista in the mid game.
Ideally, if you have a Duelist Chosen, you can have 4 Duelists in very easily with something like Cultists. If you have a low cost Chosen like Fiora or Yasuo, you can sell them at level 6 or 7 to look for Kalista or pivot into a different comp based on your Chosen.
Defensive items should go toward units like Yone or Lee Sin as they have very powerful late game abilities. Furthermore, if you are able to find a Duelist Spatula, you can make Yone a Duelist and replace Fiora with something like Irelia for 3 Adept.