b'Skeletal Monstrosity \n'b'  Gargantuan   undead ,  neutral evil  \n'b'  Armor Class  16 (natural armor)  Hit Points  148 (11d20 + 33)  Speed  40 ft.\n'b' STATS STR: 21 (+5) DEX:  14 (+2)  CON:  16 (+3)  INT:  6 (-2)  WIS:  10 (+0)  CHA:  10 (+0)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'\n'b'  Saving Throws   Con  +7,  Wis  +4  Damage Resistances  cold, fire, lightning; piercing and slashing  Damage Immunities  poison  Condition Immunities   charmed ,  exhaustion ,  frightened ,  paralyzed ,  poisoned ,  unconscious   Senses   darkvision  60 ft., passive  Perception  10  Languages  \xe2\x80\x93  Challenge  10 (5,900 XP)  Proficiency Bonus  +4 \n'b' SPECIAL TRAITS \n'b'\n'b'  Destructive Collapse . When the monstrosity is destroyed, its bones collapse. Each creature within 5 feet of it must make a DC 14  Dexterity  saving throw, taking 21 (6d6) slashing damage on a failed save, or half as much damage on a successful one. \n'b'  Legendary Resistance (3/Day) . If the monstrosity fails a saving throw, it can choose to succeed instead. \n'b'  Undead Nature . The monstrosity doesn\xe2\x80\x99t require air, food, drink, or sleep. \n'b'\n'b' ACTIONS \n'b'\n'b'  Multiattack . The monstrosity can use Screech. It then makes two attacks: either one with its bite and one with its stomp, or two bone splinters. \n'b'  Bite .  Melee Weapon Attack : +9 to hit, reach 20 ft., one target.  Hit : 15 (3d6 + 5) piercing damage, and the target is  grappled  (escape DC 15). Until this grapple ends, the monstrosity can\xe2\x80\x99t bite a different creature. \n'b'  Stomp .  Melee Weapon Attack : +9 to hit, reach 10 ft., one target.  Hit : 12 (2d6 + 5) bludgeoning damage. \n'b'  Wing Scythe .  Melee Weapon Attack : +9 to hit, reach 15 ft., one target.  Hit : 12 (2d6 + 5) slashing damage. \n'b'  Bone Splinter .  Ranged Weapon Attack : +9 to hit, range 60/120 ft., one target.  Hit : 12 (2d6 + 5) piercing damage. \n'b'  Screech . The monstrosity unleashes a bloodcurdling roar. Each creature within 120 feet of it must succeed on a DC 15  Wisdom  saving throw or become  frightened  until the end of the monstrosity\xe2\x80\x99s next turn. If a creature\xe2\x80\x99s saving throw is successful, the creature is immune to the monstrosity\xe2\x80\x99s Screech for the next 24 hours. \n'b'  Splinter Burst (Recharge 5-6) . The monstrosity exhales sharp bones in a 15-foot cone. Each creature in that area must make a DC 15  Constitution  saving throw, taking 24 (7d6) piercing damage on a failed save, or half as much damage on a successful one. \n'b'\n'b' LEGENDARY ACTIONS \n'b' The monstrosity can take 2 legendary actions, choosing from the options below. \n'b' Only one legendary action can be used at a time and only at the end of another creature\xe2\x80\x99s turn. The monstrosity regains spent legendary actions at the start of its turn. \n'b'\n'b'  Attack . The monstrosity makes a wing scythe or bone splinter  attack . \n'b'  Eat Marrow (Costs 2 Actions) . The monstrosity chews on a creature it has  grappled  and laps its leaking marrow. The creature takes 12 (2d6 + 5) bludgeoning damage, and the monstrosity regains  hit points  equal to the damage dealt. \n'b'  Sweeping Slash (Costs 2 Actions) . The monstrosity moves up to its speed. At any point during this movement, it can make two wing scythe attacks. \n'b'\n'b' ABOUT \n'b' Rumor has it the first skeletal monstrosity was a red dragon who was interrupted during her ritual to become a dragon lich. The resulting calamity left the once-dragon weak and monstrous, a mockery of her former might and a far cry from her aspirations as an undead tyrant. She was grounded in her new, terrible form, stripped of her intellect and magic, and cursed to walk the world until merciful destruction released her soul once and for all.'