This comp focuses on Jax as the main carry in a Skirmisher team. The Dragonslayers provide a lot of utility and tank while Jax will safely deal damage from behind with RFC.
Go for this comp if you can make good Jax items and have a good start with Skirmishers.

Stage 2
Before Krugs
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.
Stage 3
Before Wolves
At Round 2, level up to 6 regardless of your start. Put together the strongest team you can.
Stage 4
Before Raptors
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.
You mainly just want to have as many Skirmishers as possible while using other units you find to fill the other spots.
Hitting 6 Skirmishers gives the team a big power spike, but if you can't find them all, use supporting synergies like Nightbringer or Dawnbringer.
Another option for this comp is to run Nidalee as a second carry. This is an option if you think you can 3 star Nidalee or have good items for Nidalee and Jax. Simply replace one of your Skirmishers like Kennen or Lee Sin to make room for Nidalee.