Clotho, The Fate Weaver (Maiden Form)

Form of the Great Spider. When Clotho, The Fate Weaver (Maiden Form) drops to 0 hit points or dies, it instantly transforms into Clotho, The Fate Weaver (Great Spider Form).

Legendary Resistance (2/Day). When Clotho, The Fate Weaver (Maiden Form) fails a saving throw, it can decide to succeed instead.

Etheral Walk. Clotho, The Fate Weaver (Maiden Form) is not affected by difficult terrain.

Spellcasting. Clotho, The Fate Weaver (Maiden Form)'s spellcasting ability is Charisma (spell save DC 17). It can innately cast the following spells, requiring no material components:

Cantrips (at will): fire bolt,  ray of frost

1st level (3 slots): detect Magic, inflict wounds

2nd level (2 slots): scorching ray, cone of cold, darkness

3rd level (2 slots): fireball, cone of cold, dispel magic, fear

Multiattack The Fate Weaver (Maiden Form) makes two attacks using red silk strings of Fate

Fiery strings of Fate MeleeWeapon Attack: +8 to hit, reach 60 ft., one target. Hit: 9 (2d6 + 3) fire damage, target must make a wisdom saving throw (DC 16). On a failure the target takes an additional (4d4) psychic damage and is charmed. On each of its turn the target must make a wisdom saving throw (DC 13). On a success the charm ends.

Chilling strings of Fate MeleeWeapon Attack: +8 to hit, reach 60 ft., one target. Hit: 9 (2d6 + 3) cold damage, target must make a constitution saving throw (DC 16). On a failure the target takes an additional (4d4) psychic damage and is restrained. On each of its turn the target must make a constitution or dexterity saving throw (DC 13) to end the restraint.

Necrotic strings of Fate MeleeWeapon Attack: +8 to hit, reach 60 ft., one target. Hit: 9 (2d6 + 3) necrotic damage, target must make a charisma saving throw (DC 13). On a failure the target takes an additional (4d4) psychic damage and is [condition]frightened[/spell]. On a failure the target maximum hit points are also reduced by (2d4) and Clotho, The Fate Weaver (Maiden Form) is healed by the same amount. On each of its turn the target must make a charisma saving throw (DC 13) to end the fear.

Teleport The Fate Weaver (Maiden Form) magically teleports, along with any equipment it is wearing or carrying, up to 120 feet to an unoccupied space space it can see

Clotho, The Fate Weaver (Maiden Form) can use its bonus action to command an action to a creature that was charmed by its Fiery strings of Fate.

Fiery Reprisal. As a reaction Clotho, The Fate Weaver (Maiden Form) can cast the spell hellish rebuke (2/slots)

Clotho, The Fate Weaver (Maiden Form) can take 2 legendary actions, chossing from the options below. Only one legendary action can be taken at a time and only at the end of another creature's turn. Clotho, The Fate Weaver (Miaden Form) regains spent legendary actions at the start of its turn. 

Attack. Clotho, The Fate Weaver (Maiden Form) makes one attack with one of its strings of Fate.

Cast a spell. Clotho, The Fate Weaver (Maiden Form) casts one of its spells.

Teleport. Clotho, The Fate Weaver (Maiden Form) uses its teleport action.