Legendary Resistance (3/Day) - If the Remnant fails a saving throw, it can choose to succeed instead. Magic Resistance - The Remnant has the advantage on saving throws against spells and other magical effects. Reflective Carapace - Any time the Remnant is targeted by a magic missile spell, a line spell, or a spell that requires a ranged attack roll, roll a d6. On a 1 to 5, the Remnant is unaffected. On a 6, the Remnant is unaffected, and the effect is reflected back at the caster as though it originated from the Remnant, turning the caster into the target. Siege Monster - The Remnant deals double damage to objects and structures.
Multiattack - The Remnant can use its Frightful Presence. It then makes attacks: one with its bite, one with any number of its claws, and one with any number of its tails if applicable. Bite - Melee Weapon Attack: +19 to hit, reach 10 ft., one target. Hit: 36 (4d12 + 10) piercing damage. If the target is a creature, it is grappled (escape DC 20). Until this grapple ends, the target is restrained, and the Remnant can't bite another target. Claw - Melee Weapon Attack: +19 to hit, reach 15ft., one target. Hit: 28 (4d8 + 10) slashing damage. Tail - Melee Weapon Attack: +19 to hit, reach 20ft., one target. Hit: 24 (4d6 + 10) bludgeoning damage. If the target is a creature, it must succeed on a DC 20 Strength saving throw or be knocked prone. Frightful Presence - Each creature of the Remnant's choice within 120 feet of it and aware of it must succeed on a DC 17 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, with disadvantage if the Remnant is within line of sight, ending the effect on it's on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the Remnant's Frightful Presence for the next 24 hours.
The Remnant can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. Remnant regains spent legendary actions at the start of its turn. Attack - Remnant makes one claw attack or tail attack. Move - Remnant moves up to half its speed. Chomp (Costs 2 Actions) - Remnant makes one bite attack or uses its Swallow