Ripleys blood
 

The vampire’s blood becomes highly caustic, doing five dice of damage per blood point, and being able to eat through wood. This is considered a permanent change. If this blood is drawn by an attack, the attacker may roll Dexterity + Dodge, difficulty 8, to avoid contact with the blood; difficulty 9 if the damage was done by tooth or claw. The vampire cannot be diablerized, but can no longer embrace a mortal. The user is therefore unable to create progeny or ghouls.
 

Template
Vicissitude  Level 6 • Blood of Acid
The vampire’s blood becomes highly caustic, doing five dice of damage per blood point, and being able to eat through wood. This is considered a permanent change. If this blood is drawn by an attack, the attacker may roll Dexterity + Dodge, difficulty 8, to avoid contact with the blood; difficulty 9 if the damage was done by tooth or claw. The vampire can not be diablerized, but can no longer embrace a mortal. The user is therefore unable to create progeny or ghouls.