So I explain the basics and concept of the Invincible Esper build I've been running since 25. It's a great build to level in especially on a PvP server like mine. I am still making adjustments to this build especially for level 50 game play. However, what I show you in this video will probably not change regardless of my level. Enjoy. Music From AudioPad:. Artist: TREVVR. Track: Darkness. Download:.