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