Thread:Mich, Michele & Kuhla/@comment-26441749-20150809095833/@comment-3547897-20150809133102

It would depend on how your overall BC generation is. Though limiting it to one would be pretty difficult so I'll list a few good ones which don't require a huge amount of effort:
 * Alzeon Pearl - 50% BB gauge fill rate
 * Demon Core - Fills BC for anything you do
 * Fake Stone or Queen's Tear - 5 BC/turn
 * Heresy Orb - 25% BB gauge fill rate + 15% all stats
 * Ihsir's Guise - 20% cashback on BB + 15% all stats
 * Phoenix Crown - BB gauge fill + gradual HP recovery
 * Sacred Crystal - 10 BC/turn
 * Thorn Crown - BB gauge fills + BB gauge fills when attacked