Cape Crawler Leviathan

Legendary Resistance (3/Day). If the Cape Crawler Leviathan would fail a saving throw it can choose to succeed .

Multiple Minds. The Cape Crawler Leviathan has advantage on charisma and wisdom saving throws.

Glide. The Leviathan can glide to a suitable landing point up to 500ft away from it as long as long as it is elevated at least 20ft above the landing point. 

Multi-attack. The Leviathan uses it's Crawler Mine, then makes three attacks. One bite and two Arcane Scarabs.

Bite. Melee Weapon Attack +8 to hit, reach 15ft., 1 target. Hit: (1d12 + 8) Piercing Damage plus (1d12)(Magic Damage).

Arcane Scarab. Ranged Spell Attack: +10 to hit, reach 120 ft., 1 target. Hit: (2d10 + 10) Force damage. Targets hit are pushed back 10ft regardless of size.

Arcane Thread. The Leviathan fans out it's cape and fires off Three of the following magic threads at random (reroll duplicates), Choosing one to Three targets it can see within 200ft of it. Thread AC10, Hitpoints 10, automatically breaks upon leaving max range.

1. Pink Charm Thread. The target creature must succeed on a DC16 wisdom saving throw or become charmed by the Leviathan until the thread is severed or until the Leviathan harms the creature.

2. Green Leech Thread. The target creature must succeed on a DC 16 constitution saving throw or have 10 Hitpoints drained by the Leviathan at the start of the creature's turn.

3. Grey Crippling Thread. The target must make succeed on a DC16 strength saving throw or have their move speed halved until the thread is broken.

4. Decomposing Black Thread. The target must Succeed on a DC16 dexterity saving throw or suffer 10 necrotic damage at the start of each of the creature's turns until the thread is broken. If this damage would reduce a creature's hitpoints to 0 the creature's body is destroyed becoming a pile of black mush that can be consumed by the wildlife or used to fertilize plants.

Crawler Mine. The Leviathan makes magic symbols using it's antennas and creates an invisible magic trap on a unoccupied surface up to 120ft away it can see, it lasts until activated. If a enemy touches the trap an centipede made of arcane energy manifests out of the glyph wrapping itself around the target and shocking it. The target must succeed a DC18 wisdom saving throw or become restrained by the trap. If failed the target will take (2d8 + 10) lightning damage. The target is unrestrained on it's next turn as the spell fades away.

Breath Weapon (Recharge 3-4). The Cape Crawler Leviathan uses one of the following breath weapons.

Insectoid's Flame. The Leviathan draws forth it's inherited power causing the spines on its back to glow from it's tail to it's head imbued with the color of the element, then releases it's flame in a bellowing 40ft cone. All creatures in the area must make a DC 18 dexterity saving throw or suffer (12d8)(Fire, Acid, Lightning, Cold, or Necrotic) damage. Half on a success.

Dragonetic Webbing. The Leviathan squeezes large altered glands in its mouth and sends out a stream of layered webbing from it's mouth in a 120ft line. Creatures in the line must succeed a DC20 dexterity saving throw or get pushed to the maximum distance or until hitting a surface and become encased in webbing requiring a DC16 strength saving throw to escape.

Thread the Needle (5/day). The Leviathan can fire off one Arcane Thread.

The Leviathan can make 3 legendary actions, choosing from one of the following below. Only one legendary action can be used at a time either at the beginning or end of another creature's turn. The Leviathan regains spent at the start of it's turn.

Scarab Swarm. The Leviathan Fires off duel Arcane Beetles at one target.

Cloaking Carapace. At the cost of 2 legendary actions the Leviathan goes under the spell of invisibility and can move up to 60ft.

Shed Skin. At the cost of 3 legendary actions the Leviathan turns invisible and teleports up to 120ft to a location it can see or remember and gain 100 move speed. (Can only use when below maximum hitpoints)