The Witcher: Bio-modification Begins with Ghost Hound

Humans kneel before corpses, gods rot and whisper, and wizards frantically search for secrets of decay. Loki opens his eyes to find himself an apprentice wizard in the dark world. However, his low spiritual aptitude makes his life precarious, like a candle flickering in the night. Fortunately, he gains a stroke of luck by acquiring an ancient artifact that displays information in data form. He then transplants the various spells he has learned onto his monstrous servants: [Wild Dog] -> [Ghost Hound] -> [Soul-Binding Wolf] -> [Abyssal Wolf] -> [Cerberus]! Centuries later, a twisted, fleshy god scoffs at Loki: "Tremble, humans! Before you lies the great being who created hundreds of chimeras!" "Very well, what about yesterday?" "???"