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Desolate Limitless Black Tortoise Demon Formation!
Upon hearing this, Yang Xiaotian's heart sank abruptly.
Whether it was his master, Divine Master Hong Feng, or the Heaven and Earth Dominator in their left-behind formation secret tomes, both had mentioned the Desolate Limitless Black Tortoise Demon Formation, and they had both spoken gravely of its fearsome power.
The Desolate Limitless Black Tortoise Demon Formation, along with the Desolate Limitless Sword Formation of the Azure God Continent, was one of the ten great formations from the desolate era; its might was in no way inferior to the Desolate Limitless Sword Formation.
The perilous nature of the Dark Continent's Black Sea was not just due to the countless demonic beasts inhabiting the waters, but also because of this deep-sea located Desolate Limitless Black Tortoise Demon Formation.
