Vexillum is a mod that adds 16 new banners to the game. It offers an assortment of 16 different designs, and they're all based on the existing banners that are available in the game. This mod allows you to place the "Vexillum" folder in your Mount & Blade II Bannerlord\Modules directory.

If you don't know how to install the game, or you are using the game for the first time, here are the steps to follow:

The first thing you need to do is download Vexillum. Once you have downloaded it, open the game and go to your main menu. On the main menu, you will see a new option called "Vexillum". Click on it, and you will be able to choose from the different options.