Bastet

Feline Grace. Bastet has advantage on all Dexterity saving throws, ignoring disadvantage.

Magic Resistance. Bastet is resistant to all kinds of magic damage and has advantage on saving throws against spells and other magical effects.

Double Intention. If Bastet casts a spell as her action, she may cast another spell or make a melee attack as her bonus action.

Regeneration. Bastet regains 25 hit points at the beginning of every round as long as she has at least one hit point.

Spellcasting. Bastet is a 20th-level spellcaster. Her spellcasting ability is Wisdom (spell save DC 20, +12 to hit with spell attacks). Bastet has following sorcerer spells prepared:
Cantrips (at will): Thunderclap, Shocking Grasp, Lightning Lure, Fire Bolt, Green-Flame Blade, Acid Splash 
1st level (4 slots): Chaos Bolt, Magic Missile, Thunderwave, Witch Bolt
2nd Level (3 slots): Scorching Ray, Mind Spike, Maximilian's Earthen Grasp
3rd Level (3 slots): Fireball, Lightning Bolt, Thunder Step
4th Level (3 slots): Stoneskin, Wall of Fire, Sickening Radiance
5th Level (3 slots): Immolation, Insect Plague, Synaptic Static
6th Level (2 slots): Investiture of Flame, Mental Prison
7th Level (2 slots): Fire Storm, Crown of Stars
8th Level (1 slot): Incendiary Cloud
9th Level (1 slot): Meteor Storm

Multiattack. Bastet makes four melee attacks or a Bite attack and either two Howl attacks or a Howl attack and a Growl attack if it is available.

Claw. Melee Weapon Attack: +14 to hit, reach 5 ft., 1 target. Hit: 49 (5d10 + 24) slashing damage. 

Bite. Melee Weapon Attack: +14 to hit, reach 5 ft., 1 target. Hit: 51 (9d6 + 24) piercing damage. 

Dagger. Melee Weapon Attack: +14 to hit, reach 5 ft., 1 target. Hit: 20 (4d4 + 12) piercing damage plus 21 (3d6 +12) poison damage. 

Whip. Melee Weapon Attack: +14 to hit, reach 15 ft., 1 target. Hit: 16 (2d4 + 12) slashing damage plus 21 (3d6 + 12) fire damage. 

Slam. Melee Weapon Attack: +14 to hit, reach 5 ft., 1 target. Hit: 32 (2d8 + 24) bludgeoning damage. 

Hiss. Bastet hisses, baring her teeth and releasing a wave of vicious, echoing sound in a fifteen-foot cone. Ranged Attack: +12 to hit. Hit: 35 (3d10 + 20) psychic damage.

Growl (4-6). (+12 to hit) With a snarl, Bastet crouches and slams her hands into the ground, sending the ground in a 10-foot-wide line 100 feet in front of her rippling upward in a wave. Each creature within that range makes a  DC 18 athletics check, taking  40 (5d8 + 20) force damage plus 40 (5d8 + 20) bludgeoning damage on a failed save or half as much on a successful save. In addition, on a failed save, the target is knocked prone.