The drum of this massive hammer is topped with a layer of ultra hard diamond-like crystal that serves as an excellent catalyst for the powerful vibrations it can channel. In the off-mode, a burst hammer functions as a +1 thundering adamantine greathammer with the weapon of impact enhancement (Spell Compendium p. 237). A total of three times per day, a burst hammer can channel a shatter effect (caster level 10th) upon a successful hit against a creature or object susceptable to the spell. This effect does not allow a save for half damage, and may be used a maximum of one time per round.