This comp uses the Forgotten trait to buff up all of your Forgotten units to provide a strong baseline. The team focuses on Vayne and Warwick as the main carries and uses them to carry through the early and mid game.
Go for this comp if you have good Vayne items and have a good Forgotten start.
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.
Don't focus only on Vayne items. If you can build other Shadow items on other Forgotten units, you can get a nice stat bonus for your Forgotten units.