User blog comment:Sethimothy/Omni Arcanum & The Sphere With Too Many Ingredients/@comment-26947994-20170910191110/@comment-26947994-20170910192038

According to the Wikia page Summoner Level, level 999 summoners have 429 energy.

Also, the wording was a bit weird; I'm not level 999 but I was awake at midnight. Lol sorry about that.