This approach to using the d20 variant for Incarna uses a great deal of extra rules on top of the existing Essential Approach rule changes and the d20 system itself. The Aptitude Approach for the d20 Incarna variant is considered an Advanced concept. It add a lot of Incarna specific mechanics and options that may impact the balance, play, and time spent on the game.
The Simple Alternative > To avoid using the full Aptitude system but maintain the iVerse flavor and context, use “Affinity” – pledging Essence reflecting the ideal and an aptitude thread in The Pattern. This is offered up permanently to achieve familiarity in a noted function (divine, kinetic, occult, etc.). Example: 5 [Occult] Affinity means the character must have offered 5 Essence towards affinity in Occult capabilities. Where Affinity is indicated, the offered Essence must be equal to the Essence normally required to achieve that same level of aptitude. So “Occult Aptitude 1” would require 5 [Occult] Affinity. Affinity does not require any additional Essence when taken beyond Character Inception.
Adoption of a Primary Class and Primary Ability at the time of acquiring the first measure of Aptitude for d20. * No Aptitude’s granted powers can be exercised unless the character’s level is equal to or higher than the Aptitude rating. *
Primary Class: Must always be the highest class level (cannot be tied), if the character is multiclass. Must match the Primary Class for the Aptitude taken first.
At the time of acquiring the first measure of Aptitude for d20, the player must choose whether or not to use Aptitude for d20. Characters must assign a Primary Class if they have not already (they may only possess 1); this must be the highest or tied for highest Class Level. This class must be one in which they have a starting level in. The character must choose their Primary Ability if they have not already (they may only possess 1); It must be on the list of the Primary Class’s Proficient Abilities.