Hogwarts Legacy delivers a beautifully immersive wizarding world filled with countless mysteries, unique magical abilities, and dark secrets. Among the most sought-after spells in the entire game is Avada Kedavra, also known as the infamous Killing Curse. Learning this dark magic requires completing a specific sequence of choices and navigating an intense relationship with a fellow student.
Prerequisites and Unlocking Sebastian Sallow Relationship Quests
Before players can master the ultimate dark magic, they must invest significant time into the main storyline and relationships. The journey toward the Killing Curse is deeply tied to Sebastian Sallow, a Slytherin student dealing with a complex family tragedy. You will need to progress through his personal questline until you unlock the critical late-game mission.
Advancing the main narrative past major milestones, specifically the completion of Lodgok's Loyalty, is mandatory before the final curse unlocks. Keeping track of your owl post is essential during this stage, as Sebastian will send messages when new steps become available. Paying close attention to these updates ensures you do not miss the required pre-requisite conversations.
Completing In the Shadow of the Relic Quest
The ultimate opportunity to learn the spell occurs during the dramatic side mission called In the Shadow of the Relic. This high-stakes quest takes players deep into a dangerous, dark valley overrun with aggressive Inferi enemies. Navigating this environment requires strong combat capabilities and strategic spell combinations to survive the chaotic encounters.
After fighting your way through the horde, a serious confrontation takes place inside the deep cavern chambers. This emotional sequence serves as the narrative climax for Sebastian's darker ambitions throughout the academic term. Once the conflict concludes, you will follow him outside the cave to decide your magical path forward.
The Critical Dialogue Choices for Dark Magic
During the intense conversation outside the cave, your verbal responses will permanently determine whether you learn the curse immediately. Sebastian will question the ethics of his actions, and you must validate his choices to progress. Selecting dialogue options that express understanding rather than condemnation is the absolute key to gaining his trust.
When prompted about the nature of the dark spell, you must explicitly state that everyone should know how to use it. Following this choice, Sebastian will offer to teach you the somatic movements required for casting the magic. Accepting this gesture initiates the final spell mini-game, permanently adding the ultimate capability to your active spell wheel roster.
Alternative Methods and Post Game Acquisition
If you accidentally refuse the spell or turn Sebastian in during subsequent dialogues, you still have a secondary path available. Players can visit the Undercroft later in the game to interact with him again if he remains at the school. This ensures that exploration enthusiasts can eventually experience the full power of dark wizardry without restarting the campaign.
Utilizing the curse in open-world combat allows players to instantly defeat any non-boss enemy with a single precise strike. This creates an incredibly powerful gameplay loop, though it operates on a significantly long cooldown timer compared to standard elemental charms. Mastering this timing allows dark wizards to dominate the most challenging battle arenas efficiently.
