C349 Lithocrystalline
If Ah'Bao could obtain this Deep Sea Profound Nether Stone and infuse it into the Scarlet Flame Sword, it would be very possible for the Scarlet Flame Sword to evolve into a City Ice and Fire Dual Element Magic Treasure. If it really isn't possible, Ah'Bao can also refine an Ice Element Magic Treasure.
"How much is this Deep Sea Dark Nether Stone?" Ah Bao asked.
He knew Ah'Bao was an alchemist