User blog comment:Pulsefire Radiance/Omni Earth Miku Idea/@comment-25143574-20160928211337/@comment-26949626-20161001172529

Only one. I was assuming that the normal Brave Frontier player would typically equip a parameter boost sphere (Legwand, Occult Treasure) and an extra filler sphere. I thought that BB-type and Spark-type Spheres would fit nicely. Check Sodis's 7 star form, he has one ES effect if Guardian Shard is equipped and another ES effect if Guardian Sliver is equipped.

I'm gonna add a note regarding the extra skill if anyone else who sees this gets confused. Thank you and you will also be featured in the change log.