Cloak
Just as Mind Blank allows a character to hide her psyche, so does Cloak allow her to conceal her aura from those using Auspex powers to search for her.
System: The searcher must score more successes on a Perception + Empathy roll (difficulty 8) than the concealer scores on a Wits + Subterfuge roll (difficulty 6) in order to detect her. If the character is detected, her aura can he read normally.