D4: Tetrahedron (1-4) - Caltrops damage

D6: Cube (1-6) - Standard die

D8: Octahedron (1-8) - Longsword damage

D10: Pentagonal trapezohedron (1-10) - Percentile

D12: Dodecahedron (1-12) - Greataxe damage

D20: Icosahedron (1-20) - Attack rolls

D100: Percentile die (1-100) - Random tables