Val Moth-Ras

Eyes of the Deciever. Can see through magically concealed spells, plus has a +4 to preception.  

Spellcasting. Val Moth-Ras is a 3rd-level spellcaster. Its spellcasting ability is Charisma (spell save DC 14, +4 to hit with spell attacks). The Val Moth-Ras has following Sorcerer spells prepared:
Cantrips (at will): Firebolt, Sword Burst 
1st level (4): Shield, Mage Armor, Magic Missile                                                                         

2nd level (3): Dragon's Breath, Shadow Blade, Misty Step                                                       

3rd level (2): Fireball

Multi-attack. 

Multi-attack. 2 Melee Weapon Attack: +4 to hit, reach #5ft., 1 target. Hit: # (2d8 + 4) psychic damage. 

Cast Cast one of the available spells in his spell list. 

Cast Shield. Uses Shield spell if able.

2 Legendary actions per round.

1 Legendary actions can be used after a players turn if both of his guards are dead.

Tiamat's Revenge. Use Shadow Blade or Cast Dragon's Breath if surrounded, does not use up a spell slot.