Their new magic was a remarkable spell that took our combined knowledge of healing sunpurge and Corruption and pushed it in an entirely new direction. While Requiem focused purely on cleansing the taint and scars from one's body and soul, it directed that same energy into a large-scale support spell. What's more, because of its core in Fate Magic, it could lock onto specific souls, differentiating between friend and foe.
Such a feature was unheard of for large-scale buffs. Even Nexus was different, merely distributing a single-target spell to multiple people. True large-scale support magic typically affected an entire area indiscriminately. Using them in battle was risky, as there was a good chance you'd strengthen your enemies as much as your allies.
"I got the inspiration from your Grand Aegis, actually," R'lissea said, beaming with pride. "The ability to lock onto souls is unique to Fate Magic, and you unconsciously built that foundation into Requiem."