In "Bleach: Soul Evolution," becoming a Vaizard involves a character undergoing a transformation that typically includes mastering the Hollow powers within themselves. Players must complete specific quests or challenges that often require defeating certain enemies or fulfilling particular conditions. Additionally, players may need to interact with certain NPCs or gather unique items related to the Vaizard lore. Always check in-game guides or community forums for the most up-to-date methods and strategies.