Armor Class 17 ({@item splint armor|phb})
Hit Points 75 (10d8 + 30)
Speed 30 ft.
Skills Intimidation +5, Perception +2
Senses tremorsense 30 ft., passive Perception 12
Languages Common, Terran
Challenge 4
Death Burst. When the Stonemelder dies, it turns to stone and explodes in a burst of rock shards, becoming a smoking pile of rubble. Each creature within 10 feet of the exploding Stonemelder must make a DC 14 Dexterity saving throw, taking 11 (2d10) bludgeoning damage on a failed save, or half as much damage on a successful one.
Black Earth Rod. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) bludgeoning damage. The Stonemelder can also expend a spell slot to deal extra damage, dealing 2d8 bludgeoning damage for a 1st level slot, plus an additional 1d8 for each level of the slot above 1st.
PotA, p. 197