Irascible, fire-breathing mule.

'The Kingscote Cube', 2nd Century CE Roman Engraved Seal Stamp, Corinium Museum, Cirencester

Rock crystal dice, Roman, 1st-2nd century AD

from The British Museum

(my Thanks to the: @memories-of-ancients

Roman dice tower uncovered in Germany, 4th century AD

Polyhedron with Greek Lettering (Die), 305-30 B.C.E., or later, Brooklyn Museum: Egyptian, Classical, Ancient Near Eastern Art

A large steatite die with 20 triangular faces each inscribed with a letter of the Greek alphabet. Found with scribe’s palette acc. #37.451E Size: 1 3/16 x 1 3/16 x 1 3/16 in. (3 x 3 x 3 cm) Weight: 0.1 lb. (31.7 g) Medium: Steatite

https://www.brooklynmuseum.org/opencollection/objects/117102