For the most part, the deck only cares about casting pirates and attacking with your crew
Ultimately, the lessons the Final Fantasy set has to teach communicate some important truths about what Magic: The Gathering players want to see from IP crossovers
This puts Invasion of Tarkir in the B-tier, with the potential to move up if it does somehow manage to find a home in Pioneer or Modern
The downside is that there are hardly any combos that you can execute with it, as neither the creatures nor enchantments you have in play will likely make this better or worse
Since it has mayhem, it can be cast if you pitch it, and it works great along with enablers like Anje Falkenrath to cycle cards quickly or Containment Construct to play what you just discarded
Anyone who has seen this deck in action knows that if both of these creatures remain on the battlefield for even a single turn, the game usually ends due to each rune also functioning as a cantrip (a card that replaces itself)