Okay, [u]made this myself[/u], works pretty well.
[color=fff200]Base stats are all 8.[/color]
[color=ed1c24]You have 25 normal points to spend.[/color]
[color=ed1c24]These 25 normal points [b]cannot[/b] raise your stats above 17.[/color]
[color=00a651]You then roll a d10.[/color]
The roll determines how many [i][color=00a651]ancestral[/color][/i] points you get. The ancestral point can be spent anywhere but can also raise stats to 18+.
If any single stat is an 18 then you must roll a d20 to see if you can spend more points on that stat. If you roll a 7 or less then you can spend 1 more ancestral point in that stat. You must repeat the d20 roll to see if you can raise the stat by a further 1 each time.
Some of this is down to chance, as so is [color=ed145b]life[/color].

Thoughts?