Of Relics and Men

Catalysts. They determine the summoning of Heroic Spirits. The whims of fate in the Fourth Holy Grail War result in a different set of Servants. The Tohsaka family obtains a relic for a hero of India. The Matou summon a hero from Victorian England. The Einzberns get a very different King Arthur. These Servants will alter the destines of those in the Fourth War.