D&D4 Wiki
Attack bonus if proficient +2
Weapon dice ([W]) 2d6
Type melee
Handedness two-handed
Proficiency category superior
Weapon group
Weapon property brutal 1
Price 30 gp
Weight 12 lb.

A mordenkrad is a superior two-handed melee weapon in the hammer weapon group.[AV:9]

A mordenkrad has the brutal 1 property, so when rolling damage with a mordenkrad, any die showing a natural roll of 1 is rerolled until it shows a natural roll of 2 or higher.

No class has proficiency with the mordenkrad as a class trait, but any character can become proficient by taking a Weapon Proficiency feat.