Deepspace Key

At the start of each day, gold-rarity Dream of Gradation Echoes become immune to Devouring.
When a Dream of Gradation Echo is devoured, adjacent Dream of Gradation Echoes will receive the devoured Echo's Gradation progress and gain an extra 1 (Relic Level) points of Gradation progress.
Upgrade: Current Relic Level is 1. The Relic will automatically level up for every 5 {Cus:Sap,S=Echo P=Echoes SapTag=0} devoured.