More New Disciplines

Mimir
Cost: 1 Vitae per round
Dice Pool: Each dot of Mimir subtracts one die from all incoming attacks directed at the character, so long as the character is aware of them. Against damage that does not stem from a direct attack (such as a car crash), the vampire enjoys the benefits of armor equal to his dots in Mimir. This Discipline does not protect against the legendary weaknesses of Kindred -- fire or sunlight.
Action: Reflexive

Praestantia
Cost: 1 Vitae per scene
Dice Pool: Praestantia is unlike many other Disciplines in that it is not actively rolled. Rather, it provides a group of benefits, many of which affect other rolls.
When a character has Praestantia active, her dots in Praestantia are added to any Dexterity-based rolls made with the following Skills: Archery, Athletics, Brawl, Dodge, Firearms, Melee, and Stealth. Note that Strength-based rolls with those skills are not enhanced.
Secondly, a character using Praestantia can choose to abort any failed action involving the Praestantia Skills, even if the dice pool was based on Strength. This means that, after rolling, the player can choose to do nothing that turn, rather than deal with the consequences of a failed (or dramatically failed) roll.
Praestantia cannot be invoked more than once per scene. That is, you may not spend a second vitae to double the benefits of Praestantia.
Action: Reflexive

Both disciplines count as being rare for the purposes of creation of EH/Natural Vampires.