1-10
1 + 1d10
11-20
1 + 2d8
21-30
2 + 1d20
31-40
2 + 2d12
41-50
3 + 3d10
51-60
3 + 3d12
61-70
4 + 2d20
71-80
4 + 5d10
81-90
5 + 3d20
91-100
5 + 2d20 + 2d12
101 +
6 + 3d20 + 3d6 (+1d10 per every 10 speed)