The Holy Grail War

The Holy Grail has chosen 7 Persons for a battle to the death where every person has been given a Powerful Slave and them as the masters which was given three command spells these spells are three claims of absolute obedience, the crystallization of a great magic, that a Master has over a Servant in the Holy Grail War system. And given this rules and terms all the persons involved in the holy grail must fight till only one master last and will be granted one omnipotent wish from the Holy Grail in award for being the worthy one to receive the wish from the holy vessel.