David's Stone

This is a small roundish stone that, when thrown, always strikes true.

Stone. [missile] (major) When thrown by hand at a creature, this stone never misses. The stone is otherwise treated as a mundane missile weapon with a maximum range of 30-ft. that does 1d4 points of blunt damage when it hits (regardless of creature size).

• The stone's ability to strike a targeted creature is otherwise similar to how the spell magic missile works (i.e. no random targeting due to melee, ignores mirror images, unaffected by displacement, ignores cover/concealment under 100%, etc.).

• The wielder must be able to pinpoint a creature to hit it.

• If thrown at an object, the stone behaves as would a mundane stone (normal chances to hit, etc.)

• If thrown using a sling, the stone loses it's automatic striking ability, but gains a +4 bonus on the attack roll (with all the normal attributes of a sling stone, e.g. range categories, armor defense adjustments, etc.) and strikes as a mundane weapon (does no damage against a creature with DR/+1 or higher).

• If the wielder is attempting to make a called shot, a normal attack roll should be made, on a natural 20, the called shot is successful, if any other result is rolled, the targeted creature is hit by the stone normally.

• Once used, the stone may be retrieved and used again.

• The stone gains the standard items saves for a magical item ("stone, small").