Shadowrun: Dark Ages
This axes has a single bladed head, fairly small (19×12 cm) and light (~1kg), lightly decorated with symbolism that looks like celtic styles waves. The blade is curved and covers about a 20 degree arc. The haft of the axe is ~55cm long, made of old, sun-bleached oak, slightly curved an ergonomic (fits the hand nicely). The cutting edge is about 1/2 an inch and the runes are very very lightly visible along the edge. Careful inspection will lead you tot he conclusion that they are actually part of the metal and that the metal was carefully folded during the forging process so that when the axe was given an edge of an appropriate width and angle the runes would appear from within the metal. This shows astonishing skill.
Details of the weapons powers are currently unknown other than the power in the ax is focused against Spirits of Water.