D&D4 Wiki
Attack bonus if proficient +3
Weapon die ([W]) 1d6
Type melee
Handedness one-handed
Proficiency category superior
Weapon group
Weapon properties high crit, off-hand
Price 3 gp
Weight 1 lb.

A katar is a superior one-handed melee weapon in the light blade weapon group.[PH:218][MME:21]

A katar has high crits, dealing an extra 1d6 damage at levels 1-10, 2d6 damage at levels 11-20, or 3d6 damage at level 21-30, on a critical hit. A katar is also an off-hand weapon. A character can use a katar to make attacks even while holding another one-handed weapon in the other hand, and can use the other one-handed weapon to make attacks even if it isn't an off-hand weapon.

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

A katar, also known as a Bundi dagger, is a short punching sword that is native to the Indian subcontinent and popular elsewhere for swift and quick attacks. It is notable for its horizontal hand grip, which results in the blade of the sword sitting above the user's knuckles.