Functions of Amadioha
God of justice
Amadioha is first and foremost known as a god of justice. He speaks through thunder, and he strikes with lightning. He creates thunder and lightning by casting "thunderstones" down to earth.Persons judged guilty by Amadioha are either killed by lightning (which leaves a black mark on the forehead) or attacked by a swarm of bees.The property of the victim is usually taken by the priests of Amadioha, and the body is left unburied and the victim unmourned, as the punishment is considered to be a righteous one from God. In Igbo culture when a dead person is left unburied, it gives the people clues that this one has been punished by the Gods. In some parts of Igboland, Amadioha is used as a curse word. Oaths are often sworn to him, which can carry deadly penalties when broken.

The ritual cleansing for Amadioha is very costly and tasking. The deity can only be appeased by transferring the curse to a live goat that is let loose outside of the walls of the community.[13] The ram is a common offering for him.[5] The priestly clan of Amadioha are known as Umuamadi, which translates to children of Amadioha.

In some legends Amadioha is known to wield a sword named Mmaagha Kamalu. This sword is believed to glow red when in the presence of people with evil intentions and it will cause tremors when struck on the ground. It is also believed that the sword will gift mortals who wield it victory in battle.