Vial of aquatic banishment

The Vial of Aquatic Banishment is the only thing which can destroy an Earth Elemental Chinese Terracotta Warrior. ("The Accidental Occidental Conception")

The ingredients are:
 * A drop of water from each of the Seven Seas
 * A hair from a water buffalo
 * Thirty bottles of Tahiti Water
 * Only Tahiti Water has the exact mineral content necessary, and it absolutely cannot be replaced by ordinary tap water.