b'Great Charybdis, the Fleet Eater \n'b'  Gargantuan   aberration ,  chaotic neutral  \n'b'  Armor Class  21 (natural armor)  Hit Points  703 (38d20 + 304)  Speed  40 ft., swim 200 ft.\n'b' STATS STR: 29 (+9) DEX:  16 (+3)  CON:  26 (+8)  INT:  4 (-3)  WIS:  24 (+7)  CHA:  6 (-2)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'\n'b'  Saving Throws   Strength +16,  Wisdom +14  Skills   Athletics  +16,  Perception  +14  Damage Resistances  fire, lightning, necrotic, thunder  Damage Immunities  acid, cold  Condition Immunities   frightened ,  prone   Senses   blindsight  300 ft., darkvision 600 ft., passive  Perception  24  Languages  Aquan (can\xe2\x80\x99t speak)  Challenge  23 (50,000 XP) \n'b' Special Traits \n'b'\n'b'  Colossal Creature . Kaiju are creatures far larger than the scale of others. Conventional weapons, even highly-enchanted ones, lack the mass to deal serious wounds to a kaiju. The same is true for all but the mightiest spells. When a creature of Huge  size  or smaller deals damage to a kaiju with a weapon or feature, or with a spell of 8th level or lower, it deals half damage, which can be reduced further by  resistance  or saving throws. Siege weapons and creatures with the Siege Monster trait are treated like Gargantuan creatures. Gargantuan creatures and 9th-level spells (including lower-level spells cast with 9th-level slots) deal normal damage, which can be reduced further by  resistance  or saving throws. Kaiju deal double damage to objects and structures. They ignore normal  difficult terrain , and treat thick forests, settlements, or mountains as difficult rather than impassable terrain. \n'b'  Amphibious . Great Charybdis, the Fleet Eater can breathe both water and air. \n'b'  Vortex . Great Charybdis, the Fleet Eater can create a whirlpool around itself as an action, as long as it is in water that is at least 100 feet deep. The whirlpool ends if it loses Concentration. The whirlpool\xe2\x80\x99s diameter at the water\xe2\x80\x99s surface is half its depth, to a maximum diameter of 250 feet if the water is 500 feet deep or greater. A creature that enters the whirlpool or starts its turn there must make a DC 26  Strength  saving throw. On a failure, the creature is caught up in the whirlpool and suffers 35 (10d6) bludgeoning damage, its speed becomes 0 until the beginning of its next turn, and it automatically moves along with the whirlpool, which follows Great Charybdis, the Fleet Eater\xe2\x80\x99s movement. A ship that enters the whirlpool or starts its turn there must have its captain or helmsman succeed on a DC 21  Strength  (water vehicles) or  Wisdom  (water vehicles) check. On a failure, the ship takes 35 (10d6) bludgeoning damage, its speed becomes 0 until the beginning of its next turn, and it automatically moves along with the whirlpool. \n'b'  Legendary Resistance (3/Day) . If Great Charybdis, the Fleet Eater fails a saving throw, it can choose to succeed instead. \n'b'\n'b' Actions \n'b'\n'b'  Multiattack . Great Charybdis, the Fleet Eater makes one bite  attack  and two claw attacks. \n'b'  Bite .  Melee Weapon Attack : +16 to hit, reach 20 ft., one target.  Hit : 31 (5d8 + 9) piercing damage. If the target is a Huge or smaller creature, it must succeed on a DC 20  Dexterity  saving throw or be swallowed by Great Charybdis, the Fleet Eater. A swallowed creature is  blinded  and  restrained , it has total  cover  against attacks and other effects outside Great Charybdis, the Fleet Eater, and it takes 35 (10d6) acid damage and 35 (10d6) bludgeoning damage at the start of each of Great Charybdis, the Fleet Eater\xe2\x80\x99s turns. If Great Charybdis, the Fleet Eater takes 70 damage or more on a single turn from a creature inside it, it must succeed on a DC 21  Constitution  saving throw at the end of that turn or regurgitate all swallowed creatures, which fall  prone  in a space within 10 feet of it. If Great Charybdis, the Fleet Eater dies, a swallowed creature is no longer  restrained  by it and can escape from the corpse by using 20 feet of movement, exiting  prone . \n'b'  Claw .  Melee Weapon Attack : +16 to hit, reach 20 ft., one target.  Hit : 20 (3d6 + 9) piercing damage. \n'b'\n'b' Legendary Actions \n'b' Great Charybdis, the Fleet Eater can take 3  legendary actions , choosing from the options below. Only one  legendary action  can be used at a time and only at the end of another creature\xe2\x80\x99s turn. Great Charybdis, the Fleet Eater regains spent  legendary actions  at the start of its turn. \n'b'\n'b'  Claw . Great Charybdis, the Fleet Eater makes a claw  attack . \n'b'  Dire Currents . Great Charybdis, the Fleet Eater chooses one creature or ship within 1 mile that is in contact with the water. If it is a creature, it must succeed on a DC 21  Strength  saving throw or be pulled to any space up to 250 feet closer to Great Charybdis, the Fleet Eater. If it is a ship, its captain or helmsman must succeed on a DC 21  Strength  (water vehicles) or  Wisdom  (water vehicles) check or be pulled to any space up to 100 feet closer to Great Charybdis, the Fleet Eater. \n'b'  Recover . Great Charybdis, the Fleet Eater regains 75  hit points . Once it uses this ability, it can\xe2\x80\x99t do so again until the end of its next turn. \n'b'\n'b' About \n'b' Great Charybdis, the Fleet Eater, is one of the better known dangers of sea voyages, particularly in the treacherous, rocky waters that are its home. Ships that come too near to it are drawn into its vortex, and only the greatest captains or helmsmen could hope to endure such a danger. \n'b'  Bottomless Hunger . There is no known substance that Great Charybdis, the Fleet Eater can\xe2\x80\x99t eat, as even deadly poisons are unlikely to prove fatal to something as powerful as it is. Its hunger has never been sated, not even the times that it earned its moniker. It perpetually drinks the sea surrounding it and belches it back out again. \n'b'  Misbegotten of the Gods . Great Charybdis, the Fleet Eater was born of a sea god\xe2\x80\x99s passion, or perhaps madness. Some scholars have suggested that its purpose is to test the sailors who pass by, for the sea god hopes to identify the greatest of them for some grand honor. Naturally, none have yet been found worthy.'