You have been working as an apprentice alongside 11 others for some time now, when your Master calls you into a chamber.

You see him whisper something to your fellow apprentices before they transform into crows and fly off. When he eventually reaches you, his hand touches your cheek as he whispers "Go to a place where someone died violently and spend the night there, as tradition demands. Return by sunrise"

Though it seemed like a routine with rhe others, just before parting he adds on "Promise me you will return." just for you.