The World Within
"Let me explain how it works," Vaika waved her hand on noticing Jyorta's confusion, "Aura Induction is basically something you induce in an individual using aura, as simple as that. But, once we induce a change, the target's aura will morph as we wish."
"It is what you witnessed in the Crimson Desert when the Meka Clan Shaman engraved the tattoo," Vaika said, "The essence of the Fire-Tailed Snail was a condensation of its presence in liquid form. The shaman used it to engrave on the warrior's back, subtly affecting his presence with the presence in it. Eventually, she created the tattoo, using which the warrior was able to summon the Fire-Tailed Snail to battle."
"That is the principle behind Aura Induction," Vaika smiled, "We induce the desired effect in the aura of the target, and determine when we want to activate it. Until then, it is like a tattoo within the target's aura, something he/she cannot sense."