This comp looks to slow roll for Samira in order to 3 star her as the main carry. Swain is the secondary frontline carry of the comp who you also look to slow roll for.
Go for this comp if you find a good amount of copies of Samira early and have good items for her.
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.
After hitting level 7, begin slow rolling for Samira 3 and other units like Swain. If you don't think you can hit Samira 3, simply save up for level 8 to add in a strong unit.
You can use a lot of different things early game like Scrap, Innovator, Imperial, etc. Just make use of whatever units you find naturally.
At this point, you should have Samira to build around her with the Imperial trait and Challenger trait.
This comp is a level 7 comp as you slow roll for Samira, but if you think you can't get Samira 3, either because it's too contested or your luck isn't there, you can always go for level 8 to put in stronger units like more Challengers or frontline.