These were space stones.
When mana, aura, or mental energy flowed into them, they would release a "space wave."
Any other space stone within five thousand meters (16,404 feet) could detect it.
A space mage like me could read the space waves our stone sense and locate the other stones.
It would be useful once we entered the Cursed Spirit's domain since we'd likely be separated on arrival.
I put the stones into my inventory rune and prepared the next set of materials, and began chanting.
"Rathen suul o'vara, kethir nalun.
"Vaal'thir em suun, koren thae var.
"Zuerin tael — nax! — thal kirev.
"Sera, Veil'nu, Hara'thun."
A faint red light appeared, and a potion slowly formed in the air.
"Shadow, put it in a vial," I said.
My shadow detached from the ground, grabbed a glass vial, and caught the falling potion midair before it touched the floor.
Yuna tilted her head. "What's this potion, Lord of Shadows?"
"Heart-Burst Poison."
"…Poison?"
