b'Schatz, Mature \n'b'  Gargantuan   elemental  (earth),  lawful neutral  \n'b'  Armor Class  20 (natural armor)  Hit Points  277 (15d20 + 120)  Speed  50 ft., burrow 40 ft.\n'b' STATS STR: 25 (+7) DEX:  8 (-1)  CON:  26 (+8)  INT:  16 (+3)  WIS:  21 (+5)  CHA:  17 (+3)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'     Saving Throws   Con  +13,  Wis  +10,  Cha  +8  Skills   History  +13,  Nature  +8,  Perception  +10,  Religion  +8  Damage Immunities  fire, lightning, poison; bludgeoning, piercing, and slashing from nonmagical attacks  Condition Immunities   petrified ,  prone   Senses  blindsight 40 ft.,  darkvision  80 ft., passive  Perception  20  Languages  Common, Primordial  Challenge  16 (15,000 XP) \n'b' Special Traits \n'b'   Stonesense . The schatz has innate knowledge of everything in contact with stone within a 500-foot-radius. It knows its type and location, but not its identity or precise shape. \n'b'  Tunneler . The schatz can burrow through solid rock at half its burrow speed and leaves a 10-foot-diameter tunnel in its wake. \n'b'  Actions \n'b'   Multiattack . The schatz makes three attacks: one with its bite, one with its constriction, and one with its tail. \n'b'  Bite .  Melee Weapon Attack : +12 to hit, reach 10 ft., one target.  Hit : 20 (3d8 + 7) piercing damage, and the target must make a DC 21  Constitution  saving throw against magical petrification. On a failure, the creature begins to turn to stone and is  restrained . The  restrained  creature must repeat the saving throw at the end of its next turn, becoming  petrified  on a failure. The petrification lasts until the creature is freed by the  greater restoration  spell or other magic, or if the schatz wills so. \n'b'  Constriction .  Melee Weapon Attack : +12 to hit, reach 5 ft., one creature.  Hit : 23 (3d10 + 7) bludgeoning damage, and the target is  grappled  (escape DC 20). Until this grapple ends, the creature is  restrained , and the schatz can\xe2\x80\x99t constrict another target. \n'b'  Tail .  Melee Weapon Attack : +12 to hit, reach 15 ft., one target.  Hit : 18 (2d10 + 7) bludgeoning damage. If the target is a creature, it must succeed on a DC 20  Strength  saving throw or be pushed back up to 10 feet and be knocked  prone . \n'b'  About \n'b' The schatz is a living legend. A gigantic snake with stony skin, eyes that shine like jewels, and piercing fangs as sturdy as marble, there can be no doubt of its link to the elemental powers of earth. It feeds on rocks, swallowing them up and crushing them inside its powerful stomach, after which it spends several months in peaceful, digestive drowsiness. \n'b' The schatz, however, cannot digest all manner of stones, and due to its diet, its entrails are full of precious minerals, which line the insides of its body. \n'b' Whoever could overcome such a monster would find themselves extremely wealthy\xe2\x80\xa6 and the target of fierce animosity, for it is said that this serpent is blessed. Therefore, the killing of a schatz is sure to arouse divine wrath. \n'b' A theory proposes the schatz originate from the same world as the  cockatrice  and  basilisk , as evidenced by its petrifying venom. Whatever the truth may be, the schatz themselves have not seen fit to comment on the issue. \n'b' Despite their elemental nature, the schatz are not born fully formed. They come into existence within Eana\xe2\x80\x99s womb, growing slowly over the decades. However, even a young schatz remains a massive and formidable creature. \n'b' Compared to older specimens, the young have less control over their powers, do not speak a humanoid language, and are less familiar with civilized customs, making them wilder and more unpredictable. They are also more curious and less sedentary, and their wanderings sometimes lead them into trouble. Many immature schatz have met a premature end, whether by attacking ravagers stronger than themselves, being mistaken for simple monstrosities and slain, or being hunted by greedy treasure hunters.'