Fortuna

Fortuna is the magic of luck, both favorable and unfavorable. In this respect, it is similar to the Hedge Art of Fortunam (HMRE, 89). Fortuna is always Muto magic, as luck is an unnatural property, granted to someone or something. Integrating Fortuna into Hermetic Theory requires a Minor Breakthrough (HoH:TL, 26); once such a Breakthrough is achieved, all of the Fortuna guidelines detailed below become available to a character who understands the Breakthrough.

As with the Fortunam Hedge Art, applying Magic Resistance to Fortuna effects can be complex. Fortuna effects which affect contested actions must penetrate the Magic Resistance of all entities involved in order to be effective.

Due to the Limit of Essential Nature, Fortuna effects are not capable of altering the luck of someone with the Luck Virtue or Unlucky Flaw, nor are they capable of overcoming the effects of the Jinxed Flaw directly. Fortuna effects are not capable of modifying situations that normally would not require a die roll, such as Seasonal study totals, lab totals, etc..

For each guideline below, the Form or Forms of the effect depend on the Target. For example, affecting Fortuna of a person would be Corpus and/or Mentem, depending on the specifics of the effect. Affecting Fortuna of a beast would be Animal. Affecting Fortuna of a pair of dice would be Animal (for knucklebones) or possibly Herbam (if carved from wood), or Terram (if made of stone).

Guidelines that allow a re-roll always allow the player to select the better result of the two rolls. Guidelines that refer to Luck-related rolls refer to rolls that would be applicable to the Luck Virtue (ArM5, 45).

Fortuna Guidelines

General		Increase the number of botch dice rolled by the Target by the base magnitude of this effect
General		Decrease the number of botch dice rolled by the Target by the base magnitude of this effect (but not below one die)
1		Allow a re-roll of a failed attempt for a single Ability with an Ease Factor no greater than 3
1		Provide a +1 bonus to all Luck-related rolls
2		Allow a re-roll of a failed attempt for a single Ability with an Ease Factor no greater than 6
2		Provide a +1 bonus to all rolls for a single General, Academic, or Martial Ability
2		Modify a single Ability roll by -1
3		Allow a re-roll of a failed attempt for a single Ability with an Ease Factor no greater than 9
3		Provide a +2 bonus to all Luck-related rolls
3		Force a Target to re-roll a single contested Ability result and use the worse of the two results
3		Prevent random minor mishaps from affecting the character
4		Allow a re-roll of a failed attempt for a single Ability with an Ease Factor no greater than 12
4		Provide a +2 bonus to all rolls for a single General, Academic, or Martial Ability
4		Modify a single Ability roll by -2
5		Allow a re-roll of a failed attempt for a single Ability with an Ease Factor no greater than 15
5		Provide a +3 bonus to all Luck-related rolls
5		Allow a re-roll of a failed contested attempt for a single Ability
10		Allow a re-roll of a failed attempt for a single Ability with any Ease Factor
10		Provide a +3 bonus to all rolls for a single General, Academic, or Martial Ability
10		Provide a +1 bonus to all rolls using a single Characteristic
10		Inflict a -1 penalty to all rolls using a single Characteristic
10		Modify a single Ability roll by -3
10		Grant a Minor General Virtue such as Puissant Ability, Intuition, Luck, etc. (Ritual)
10		Inflict a Minor General Flaw such as Unlucky (Ritual)
10		Allow a Target to treat stress dice as simple dice for a single Ability
10		Force a Target to treat simple dice as stress dice for a single Ability, but do not re-roll '1'
15		Provide a +2 bonus to all rolls using a single Characteristic
15		Replace die rolls with a result of '6' for a single Ability (Perdo requisite)
15		Inflict a -2 penalty to all rolls using a single Characteristic
20		Provide a +3 bonus to all rolls using a single Characteristic
20		Inflict a -3 penalty to all rolls using a single Characteristic
20		Grant a Major General Virtue equivalent to Ways of the Land (Ritual)

*Vita Fortunata*
MuCo(Me)	20	Touch	Moon	Ind
"Charmed Life" prevents minor random mishaps, both mental and physical, from affecting the target individual for Moon duration. This spell uses Fortuna magic, and may not be invented, with or without a lab text, by someone who has not learned that Breakthrough.
Fortuna Base 3, +1 Touch, +3 Moon, +1 additional Mentem effect

Munditiam Simpliciorem
MuMe	25	Touch	Sun	Ind
"Simplified Finesse" replaces stress dice with simple dice for Finesse rolls for Sun duration. This spell uses Fortuna magic, and may not be invented, with or without a lab text, by someone who has not learned that Breakthrough.
Fortuna Base 10, +1 Touch, +2 Sun