Although nearly all of the derivative powers from the "Power of the Earth" can purify the Mad Earth, the Power of the Earth itself is not a force specifically designed to purify the Mad Earth.
Shard's Power of the Earth: Memory of the Soil can purify the earth by extracting filthy memories from the Mad Earth, but essentially, it's a power that feels the memory of the earth; Luviya's Power of the Earth: Abundant Field can protect people within the field and suppress the power of the Mad Earth, but the Abundant Field is actually a power that promotes plant growth.
As for Shard's "Power of the Earth: Healing Aura", this power was born to purify polluted soil, so even if the story of the Chosen of the Earth comes to an end temporarily, and the earth is momentarily appeased, this sorcery can still play a role.
In the mist, a hint of golden light appeared in Shard's hand. Then, the golden light, like a seed, fell into the sandy ground.
