Learning or developing new Arcana is an iterative process that typically requires prolonged study, research and experimentation.

Each day a character wishes to study or develop a new Arcana, he must make an Easy (+30) Forbidden Lore(Warp) or Routine (+20) Scholastic Lore(Occult) Test. For every 5 points of the Arcana's Threshold, this Test requires 1 hour of study to complete (minimum of 1 hour). If the Arcana being studied is Major, this Test requires double the normal amount of time to complete (to a maximum of 16 hours). The character may subtract his Intelligence Bonus, and the number of degrees of success on this Test from the hours of required to complete the Test, to a minimum of 1 hour. At the GM's discretion, certain useful referential materials, such as Malefic Codexes (Disciples of the Dark Gods, Page 120) may provide a bonus to this Test.

In order to fully and successfully learn an Arcana, the character must accumulate a total number of degrees of success from these Forbidden Lore(Warp) and/or Scholastic Lore(Occult) Tests equal to its Threshold divided by 5 (round up). If the Arcana being studied is Major, double the total degrees of success required. Subtract each degree of failure accumulated from this total to a minimum of 0.

Once the Arcana is successfully learned, an Easy (+30) Willpower Test must be passed as the baleful nature of the knowledge gained through the character's malign scholarship exerts a corrosive effect on his psyche and soul. The Difficulty of this Test decreases by one step per degree of success greater than the total required to learn the Arcana. On a failure, and for each degree of failure on this Willpower Test, the character gains 1 Corruption and Insanity Point, doubling this amount if the Arcana is Major. At the completion of this step, the learned Arcana may be used as normal by the character.

The Difficulty of all Tests above is increased by one step per 5 points of the Threshold of the Arcana to be learned and by an additional one step if that Arcana is Major. While anyone may learn Arcana in this way, only Daemons, Warp Entities, and those with the Sorcerer and/or Master Sorcerer Talents (Disciples of the Dark Gods, Page 117) may actually utilize it.

A version better suited to GMs that prefer a model which reflects the danger in merely studying and exposing oneself to the malefic knowledge of sorcery, this incarnation of the above rules imposes a Willpower Test to prevent accumulation of Insanity and Corruption Points after each Lore Test:

Learning or developing new Arcana is an iterative process that typically requires painstaking prolonged study, research and experimentation.

When a character wishes to study or develop a new Arcana, he must make an Easy (+30) Forbidden Lore(Warp) or Routine (+20) Scholastic Lore(Occult) Test. For every 5 points of the Arcana's Threshold, this Test requires 1d5 hours of study to complete (minimum of 1 hour). If the Arcana being studied is Major, this Test requires double the normal amount of time to complete. This Test may be spread out over any number of days. The character subtracts his Intelligence Bonus, and the number of degrees of success on this Test from the hours of required to complete the Test, to a minimum of 1 hour. At the GM's discretion, certain useful referential materials, such as Malefic Codexes (Disciples of the Dark Gods, Page 120) may provide a bonus to this Test.

Whether or not the Forbidden Lore(Warp) or Scholastic Lore(Occult) Test is successful, the character must make an Easy (+30) Willpower Test as the baleful nature of the knowledge gained through the character's malign scholarship exerts a corrosive effect on his psyche and soul. The Difficulty of this Willpower Test decreases by one step per degree of success on either of these Skill Tests, representing his astute mastery of the diabolic and the slight measure of protection this extent of understanding affords. On a failure, and for each degree of failure on the Willpower Test, the character gains 1 Corruption and Insanity Point, doubling this amount if the Arcana is Major.

In order to fully and successfully learn an Arcana, the character must accumulate a total number of degrees of success from these Forbidden Lore(Warp) and/or Scholastic Lore(Occult) Tests equal to its Threshold divided by 5 (round up). If the Arcana being studied is Major, double the total degrees of success required. Subtract each degree of failure accumulated from this total to a minimum of 0. At the completion of this step, the learned Arcana may be used as normal by the character.

The Difficulty of all Tests above is increased by one step per 5 points of the Threshold of the Arcana to be learned, and by an additional one step if that Arcana is Major. While anyone may learn Arcana in this way, only Daemons, Warp Entities, and those with the Sorcerer and/or Master Sorcerer Talents (Disciples of the Dark Gods, Page 117) may actually utilize it.

HI!

Are you "the official FFG" or are you just a user who choose his nick in order to sound official?

Was this post by Lasers ? It looks like that account was deleted or something along those lines. I guess this is what remaining posts by a no longer existing account look like.

Back to these rules, they look alright but I personally don't quite agree with the Corruption. Now, don't get me wrong, getting corruption for learning sorcery makes sense in a vacuum. However, PC Sorcerers already have to deal with the 1d10-WP bonus every time they use one of their Arcana. Laying on more corruption seems a bit unfair. Well, I guess that can be the price of Radicalism.

Yes, it was by me.

While the rules may seem harsh, consider that while the base difficulty of the Willpower Test to avoid Corruption is around -20 for Major Arcana, and 0 for Minor Arcana, it is reducible by a number of steps equal to the character's degrees of success on the Lore Tests.

Perhaps I will include that the Sorcerer Talent reduces the difficulty of all Tests by one step, while the Master Sorcerer Talent reduces it by two, as characters with such knowledge are much better versed in the use, study and hazards of Sorcery than any layman. What do you think?