Warhammer

Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 13 (2d8 + 4) bludgeoning damage, or 15 (2d10 + 4) bludgeoning damage if used with two hands to make a melee attack.

Rock

Ranged Weapon Attack: +6 to hit, range 60/240 ft., one target. Hit: 15 (2d10 + 4) bludgeoning damage.