¡QUÉ HORROR! | FINAL FANTASY XVI Part 14

COMING UP ON FINAL FANTASY XVI:
They have infiltrated Sanbreque's capital. They have gone inside the inner sanctum... all to destroy the first (of five!) Mothercrystals. But what is this *thing* that appeared outta nowhere!? What does it want!? And most importantly, what does it intend to do!?