06-17-2016, 07:21 AM
I wasn't going to say anything but I decided I will... 
Personally I think I would have allowed the Morning Star to break up the stone. Morning stars are Bludgeoning AND Piercing weapons. So even if you don't agree with the Adamantine Morning Star smashing the stone, its piercing qualities and the ability to ignore damage reduction of Adamantine would literally act like the stone was made from cheese. And since Adamantine ignores damage reduction, the stone wouldn't even dull the spikes on the head of the weapon. The hole wouldn't be pretty -- imagine using an ice picks on a block of cheese -- but it would eventually rip it up enough to hold water. As for breakage, weapons in D&D never have had to check for breakage unless they are attacked (sundered) or damaged by a spell.
Anywhoo, that's just my two cents.
Personally I think I would have allowed the Morning Star to break up the stone. Morning stars are Bludgeoning AND Piercing weapons. So even if you don't agree with the Adamantine Morning Star smashing the stone, its piercing qualities and the ability to ignore damage reduction of Adamantine would literally act like the stone was made from cheese. And since Adamantine ignores damage reduction, the stone wouldn't even dull the spikes on the head of the weapon. The hole wouldn't be pretty -- imagine using an ice picks on a block of cheese -- but it would eventually rip it up enough to hold water. As for breakage, weapons in D&D never have had to check for breakage unless they are attacked (sundered) or damaged by a spell. Anywhoo, that's just my two cents.
