No two characters should have the same Major Hermetic Virtue. Note that a Magical Focus is the exception; the chosen specialization just has to be different! In fact, one theory goes that every magus should have a Magical Focus.
Chthonic Magic: Your magic is associated with dark spirits or the underworld, giving you various benefits tied to the Infernal realm.
Craft Automata: You can create mechanized animals and people animated by magic.
Diedne Magic: You are a descendant of Celtic Druids and a dishonored House of Hermes. Spontaneous spells are very easy for you, but ritual spells are impossible.
Elemental Magic: You gain experience more quickly in the four elemental Arts: Air, Earth, Fire and Water.
Faerie Raised Magic: House Merinita only. You can teach yourself spells more quickly and out of the laboratory.
Flawless Magic: You master every spell you learn, giving you special benefits and reducing the chance of botch.
Flexible Formulaic Magic: You can modify your formulaic spells on the fly, as you cast them.
Gentle Gift: Your Gift does not cause everyone else to hate, fear, and shun you.
Hermetic Sorcery: Your intuitive knowledge of demonic magic allows you to gain experience in Arts when you study black magic or supernatural lore.
Holy Magic: Instead of traditional Magic Theory, your magic is based on divine principles, giving you various special abilities but causing you to be considered a hedge wizard.
Leper Magus: House Tytalus only. A magus with leprosy, you can empower spells by wounding yourself.
Life-Linked Spontaneous Magic: You can use your life energy to fuel powerful spontaneous spells.
Major Magical Focus: You have a specialization in a broad magical field such as Weather, Necromancy, Birds, or Emotions.
Mercurian Magic: You are especially good with ritual magic, enjoying many benefits. However, you cannot cast quick spontaneous spells.
Mythic Blood: You are descended from a magical race, such as a wizard of legend, the Zmir dragons of Transylvania, or the Hyperboreans of Apollo.
Secondary Insight: You gain experience faster when you study the Arts.
Sense of the Mystic: Your Intellego spells do not need to penetrate magic resistance; this makes it much easier for you to see and understand magical beings and other magi.
Tamed Magic: House Mercere only. You can cancel any of your spells at any time or give control of them to another person.