Crimson Key

In exchange for a 1d4 blood sacrifice the caster draws a single tendril of blood of from their finger. this tendril, when inserted into a lock will take the shape of a key of blood, unlocking the mechanism. For most common locks, this ability is innate. For particularly challenging locks, it allows the caster to make their lock picking check using their spell attack bonus and their proficiency bonus for the role.

when cast at the 7th level no check can be required and the blood sacrifice is changed to 1d8.