Armor Class 17
Hit Points 168 (16d8 + 96)
Speed 50 ft., fly 60 ft., swim [object Object] ft., burrow [object Object] ft.
Saving Throws STR +9
Skills Perception +10, Stealth +7
Condition Immunities charmed, frightened
Senses Darkvision 60 ft., passive Perception 20
Languages understands Common but can't speak
Challenge 11
Amphibious (Sea Form Only). The beast breathes air and water.
Divine Immortality. If the beast dies, its body dissolves into black goo, and it gains a new body after 1d10 days, reviving with all its Hit Points in a place of Malar's choosing.
Legendary Resistance (3/Day). If the beast fails a saving throw, it can choose to succeed instead.
Magic Resistance. The beast has Advantage on saving throws against spells and other magical effects.
Regeneration. The beast regains 20 Hit Points at the start of its turn. If the beast takes Radiant damage or damage from a Critical Hit, this trait doesn't function at the start of the beast's next turn. The beast dies only if it starts its turn with 0 Hit Points and doesn't regenerate.
Multiattack. The beast makes three attacks, using Bite or Claws in any combination.
Bite. m +9, reach 5 ft. Hit: 23 (4d8 + 5) Piercing damage.
Claws (Land or Sky Form Only). m +9, reach 5 ft. Hit: 18 (3d8 + 5) Slashing damage. If the target is Large or smaller, it has the Prone condition.
Recuperative Shape-Shift. The beast shape-shifts into its land form, sea form, or sky form and regains 9 (2d8) Hit Points. Its game statistics are the same in each form, except where noted. Any equipment it is wearing or carrying isn't transformed.
FRAiF, p. 251