Un'goro Giganotosaurus

Adaptation. The flora and fauna of Un'Goro are ever-changing and constantly adapting. If a property or action causes a creature to adapt, roll a d10 to determine which adaptation the creature acquires, depending on the number rolled. If the creature already has the rolled adaptation, roll a d10 until an adaptation the creature does not yet possess is rolled. The adaptation effect lasts until the creature finishes a long rest.

1. Elemental Protection. The creature gains immunity to damage from sound, acid, fire, cold, and electricity.
2. Resilient Organism. The creature gains immunity to damage from necrotic, poison, acid, and radiation.
3. Psychic Barrier. The creature gains immunity to damage from force or psychic attacks.
4. Durable Carapace. The creature gains immunity to non-magical piercing, bludgeoning, and slashing damage.
5. Sharp Fangs. Each time the creature hits with an attack that deals bludgeoning, slashing, or piercing damage, it deals an additional 2d6 damage of the same type.
6. Maneuverability. The creature gains a flying, swimming, and climbing speed equal to its normal speed (if the creature already has one of these speeds, it remains unchanged).
7. Camouflage. The creature makes Dexterity (Stealth) checks with advantage, and once per day can apply an effect that grants it invisibility, silent movement, and leaves no tracks for one minute.
8. Pounce/Bounce. The creature gains the ability to teleport up to 30 feet to an unoccupied space it can see as a bonus action.
9. Elemental Essence. As a reaction, when the creature takes damage from sound, acid, fire, cold, or electricity, it can gain resistance to that type of damage until the end of the round. Additionally, when the creature first hits with a melee attack on its next turn, the target takes an additional 1d6 damage of the same type.
10. Sharp Spikes. Each time the creature takes damage from a melee attack, the attacking creature takes 1d4 piercing damage.

Unlimited Adaptation. When this creature is supposed to adapt, if it has already acquired all 10 types of adaptations, it gains one of the following effects until the end of the day (these new adaptations can be gained an unlimited number of times, and their effects are cumulative). To determine the effect, roll a d6:

1. Very Sharp Claws. Each time the creature hits with an attack that deals bludgeoning, slashing, or piercing damage, it deals an additional 1d6 damage of the same type.
2. Increased Mobility. All of this creature's speeds increase by 10 feet.
3. Enhanced Armor. The creature's AC increases by 1.
4. Increased Evasiveness. All of the creature's saving throws increase by 1.
5. Very Sharp Shell. Each time the creature takes damage from a melee attack, the attacking creature takes 1d4 piercing damage.
6. Roll twice on d6, the creature receives 2 Unlimited Adaptations according to the rolled values (ignore a 6 on these rolls).
   
   Legendary Resistance (1/Day). If the Un'goro Giganotosaurus fails a saving throw, it can choose to succeed instead.

Multiattack. The Un'goro Giganotosaurus makes two attacks: one with its bite and one with its tail. It can use Swallow in place of its bite.

**Bite.** Melee Weapon Attack: +12 to hit, reach 15 ft., one target. *Hit:* 34 (4d12 + 8) piercing damage. If the target is a Large or smaller creature, it is grappled (escape DC 18). While the target is grappled, it is restrained, and the Giganotosaurus can't bite another target.

**Tail.** Melee Weapon Attack: +12 to hit, reach 20 ft., one target. *Hit:* 26 (4d8 + 8) bludgeoning damage.

**Swallow.** The Giganotosaurus makes one bite attack against a Large or smaller creature it has grappled.

If the attack hits, the target takes the bite's damage and is [Tooltip Not Found], and the grapple ends. The swallowed creature is blinded and restrained, it has total cover against attacks and other effects outside the Giganotosaurus, and it takes 21 (6d6) acid damage at the start of each of the Giganotosaurus's turns.

If the Giganotosaurus takes 30 or more damage in a single turn from a creature inside it, it must succeed on a DC 15 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, which fall prone in a space within 10 feet of the Giganotosaurus. If the Giganotosaurus dies, a swallowed creature is no longer restrained and can escape from the corpse using 30 feet of movement, exiting prone.

The Un'goro Giganotosaurus can take 3 legendary actions. Legendary action can be used only at the end of another creature's turn. Un'goro Giganotosaurus regains spent legendary actions at the start of its turn.

King of Adaptations. The Un'goro Giganotosaurus adapts