Your  connection to death is strong enough that you can appear to be a true corpse when convenient. 

Cost: One Rouse check

System: Make one Rouse check, and spend your simple action to transform your physical form into that of a normal corpse. You may also activate this power for free if you enter torpor due to damage or if you are successfully staked. 

While Masque of Death is active, you are considered to be a mundane corpse. You cannot move, you have no aura, you lose access to all of your vampiric powers (except for the effects of Masque of Death), and you appear to all investigation as a simple, non-supernatural dead body. While this power is active, you are aware of everything that occurs within five steps of your physical form. You do not take wounds from damage to your body while in this state, but you can be killed if your head is severed, you are exposed to sunlight, or your body is destroyed. Powers such as Aura of Decay that directly affect corpses, however, do not work on you while you are a corpse.

Destroying or beheading your corpse in this manner requires the attacker to utilize three standard actions, during which you may choose to end Masque of Death. Ending Masque of Death returns you to the exact state (same Conditions, Health levels, etc.) you were in prior to utilizing this power, including Torpor if you activated this prior to falling into Torpor.

Duration: Until you choose to end the power