Sum 18
Sum 18 is three sixes — the rarest and most favorable result in the tradition.
Interpretation
The meaning is complete success, the most that is possible: honor, promotion, recognition, a wish fulfilled. In the collections it is the best result you can roll, with no caveats at all.
Because 18 comes up so rarely, tradition treats it as a special occasion: the event will be noticeable rather than routine.
Probability
Three dice give 216 equally likely outcomes (6 × 6 × 6). A sum of 18 comes from 1 of them, or 0.46%.
It is one of the two rarest sums: it can only be rolled one way — three identical faces.
The closer a sum is to the middle, the more often it comes up, and the traditional interpretations take this into account: the extreme sums have the sharpest meanings.
Advice
Act boldly and go all in. Now is the time to ask for more than you had planned to ask for.