Blue is the most common pairing for the preliminary Pirate decks, given that one-drop Siren Stormtamer serves as an excellent way to push damage through (thanks for Fell Flagship and flying), turn on raid, and protect critical Pirates (like a Kitesail Freebooter keeping Settle the Wreckage locked away mid-combat)
This slot features a traditional foil card every time and gives you a Booster Fun treatment to sink your teeth into
For learning about MTG oddities and rarities check out: A note on nomenclature from the creator of this website Over the course of collecting Magic the Gathering misprints I have found there to be a wide range in the words used to describe errors and their perceived names
How you use that equipment and which commander you decide to suit up is entirely your choice, but theres a wide enough swathe of commanders to choose from to make your deck stand out from the rest
Like a Voja, Jodah, or MTG Sliver deck, your best bet against Vren is going to be a board wipe
Having these included means players wont be scrambling to find substitutes when they come into play
