The Necromancer's Folly

You are the world's most renowned wielder of black magic - The necromancer. People speak your name in whispers. your army of the dead is feared throughout the land. Army's have clashed and died trying to oppose you. Their bodies only added more undead to your ranks. The cost of being the most renown black mage however, is that you must a sacrifice a living being every few years to sustain you. Their stolen life became your life essence. That is until today... The ritual was supposed to be basic necromancy, easy, routine. You have done it hundreds of times before. But something went wrong. Terribly wrong. You are not who you used to be... (This is my first ever published scenario. I did add auto-cards by LewdLeah if you want to use them, thanks to Scenario-Failure for the inspiration xx feedback is appreciated)