🔥 """"Red Dragon Tarrasque""""" 🔥

Legendary Resistance (6/Day). When the Tarrasque fails a Saving Throw, it can choose to succeed instead.

Magic Resistance. The Tarrasque has Advantage on Saving Throws against spells and other magical effects.

Siege Monster. The Tarrasque deals double damage to objects and structures.

Reflective Carapace. If the Tarrasqye is targeted by a Magic Missile spell or a spell that requires a Ranged Attack Roll, roll 1d6. On a 1-5, the Tarrasque is unaffected. On a 6, the Tarrasque is unaffected and reflects the spell, turning the caster into the target.

Horrifying Presence. Any creature that starts its turn within 60 ft. of the Tarrasque must succeed a DC 20 Wisdom Saving Throw or become Frightened until the end of their next turn. They can repeat the save on the start of their turn, ending the condition on a success. On a successful save, that creature is immune to the Tarrasque's Horrifying Presence for the next 24 hours.

Impenetrable Hide. The Tarrasque reduces all incoming damage by 20. Furthermore, any Critical Hit made against it counts as a normal hit. 

Blazing Fire Scales. A creature that deals damage to the Tarrasque with a Melee Attack Roll takes 17 (3d10) Fire damage. 

Multiattack. The Tarrasque makes one Burning Bite attack, two Searing Claw attacks and one Scorching Tail attack, or uses Inferno Ball two times. 

Burning Bite. Melee Attack Roll: +19 to hit, reach 15 ft., one target. Hit: 36 (4d12+10) Piercing damage plus 11 (2d8) Fire damage and the target has the Grappled condition (escape DC 25). While Grappled, the target is Restrained and takes 11 (2d8) Fire damage at the start of each turn.

Searing Claw. Melee Attack Roll: +19 to hit, reach 15 ft., one target. Hit: 28 (4d8+10) Slashing damage plus 11 (2d8) Fire damage and the target must succeed a DC 25 Constitution Saving Throw or receive Vulnerability to Fire damage. 

Scorching Tail. Melee Attack Roll: +19 to hit, reach 30 ft., one target. Hit: 23 (3d8+10) Bludgeoning damage plus 11 (2d8) Fire damage and the target is knocked Prone if it is a Huge or smaller creature.

Inferno Ball. DC 25 Dexterity Saving Throw: All creatures within a 60 ft. emanation centered on a point within 120 ft. of the Tarrasque. Fail: 63 (14d6+13) Fire damage. Success: Half damage only. 

Incineration Breath (Recharge 5-6). DC 25 Dexterity Saving Throw: All creatures within a 300 ft. cone. Fail: 180 (20d12+20) Fire damage. Success: Half damage only. 

Devouring Chomp. DC 25 Strength Saving Throw: One Large or smaller creature Grappled by the Tarrasque. Failure: The target is swallowed and the Grappled condition ends. A swallowed creature has the Blinded and Restrained conditions, has Total Cover against attacks made outside the Tarrasque, and it takes 56 (16d6) Acid damage at the start of each their turns. If the Tarrasque takes 60 damage or more on a single turn from a creature inside it, the Tarrasque must succeed on a DC 20 Constitution Saving Throw immediately or regurgitate all swallowed creatures, each of which falls in a space within 10 ft. of the Tarrasque with the Prone condition. If the Tarrasque dies, any swallowed creature no longer has the Restrained condition and can escape from the corpse using 20 ft. of movement, exiting Prone.

Immolating Aura (Recharge 4-6). The Tarrasque emits a fiery aura. All creatures that start their turn within 60 ft. of the Tarrasque take 23 (4d10) Fire damage until the end of the Tarrasque's next turn. 

Legendary Action Uses: 3. Immediately after another creature's turn, the Tarrasque can expend a use to take one of the following Legendary Actions below. The Tarrasque regains all expended uses at the start of each of its turns.

Immolating Ram. The Tarrasque moves up to half its speed in a straight line. After the movement, all creatures within 15 ft. of the Tarrasque takes 44 (6d12) Fire damage. 

Craterous Stomp. All creatures within 60 ft. of the Tarrasque must succeed a DC 25 Constitution Saving Throw or take 29 (4d10+10) Bludgeoning damage and be knocked Prone. Half damage only on a successful save. 

Storm of Destruction (Costs 2 Legendary Action Uses). All creatures within a 150 ft. emanation centered on the Tarrasque must succeed a DC 25 Dexterity Saving Throw or take 52 (8d8+8) Fire damage and receive Vulnerability to Fire damage until the end of the Tarrasque's next turn.