The Most Powerful Magic (слэш)

Severus Snape wakes up after the war to find that over twenty years have passed and Nagini's venom has wreaked havoc on his body. While he searches for a way to heal the damage, Severus has to find a way to come to terms with the new world into which he's awoken as well as the ancient magic that helped to bring him back. (Snarry is the primary pairing)