Refine your base set of distinctions
This may be taken multiple times, with increasing benefits the more times it is taken as a constellation. To clarify, It does not have to be taken sequentially but you only gain the benefits based on the number of times taken (not when it was taken).
First time (typically C1): Step up one of your base distinctions, permanently.
Second time (typically C2): Step up two separate base distinctions one time, permanently.
Third time (typically C4): Step up all three of your base distinctions, permanently
Fourth time (typically C5): All three base distinctions are permanently raised to d12.
Distinctions max out at a d12 and follow this pattern: (d6->d8; d8->d10; d10-d12;)