Aurelia Prinzessin des Nebels und der Morgendämmerung

Divine Potent: When Aurelia finishes a long rest, she rolls three d20s and you record the numbers rolled. She can replace any attack roll, saving throw, or ability check made by her or a creature that she can see with one of these foretelling rolls. Each foretelling roll can be used only once. When you finish a long rest, you lose any unused foretelling rolls.

Magical Resistance: Aurelia has advantage on saving throws against spells and other magical effects. 

Hung-over: If Aurelia does not have her daily potion of Elon Trance she has disadvantage on all ability checks, attack rolls and saving throws. 

Spellcasting. The Aurelia is a 15-level wizard. Her spellcasting ability is Intelligent (spell save DC 18, +10 to hit with spell attacks). Aurelia has the following Wizard spells prepared:
Cantrips (at will): Chill Touch, Infestation, Message, Poison Spray, Ray of Frost
Additional Spells to cast at Will: Detect Magic, Levitate, Misty Step
1st level (4 slots): Shiel, Sleep
2nd level (3 slots): Detect Thoughts, Blindness/Deafness
3rd level (3 slots): Counterspell, Dispel Magic, Feign Death, Life Transference, Summon Fey, Tongues
4th level (3 slots): Confusion, Otiluke's Resilient Sphere, Sickening Radiance
5th level (2 slots): Far Step, Modify Memory, Synaptic Static
6th level (1 slots): Eyebite
7th level (1 slots): Etherrealness, Magnificent Mansion
8th level (2 slots): Control Weather, Power Word Stun

Ritual Casting: Aurelia can cast the following Spells as a ritual. It takes her 10 min to conduct a ritual: 
Comprehend Languages, Detect Magic, Identify, Feign Death

Cast a Spell. Aureil can cast Spells that she prepared. 

Action Melee Attack. Melee Weapon Attack: +10 to hit, reach 10 ft., 1 target. Hit: 13 (3d8) necrotic damage. (Chill Touch: On a hit the target can't regain hit points until the start of your next turn)

Action Ranged Attack. Ranged Spell Attack: +10 to hit, range 120 ft., 1 target. Hit: 13 (3d8) cold damage. (Ray of Frost: On a hit the target's speed is reduced by 10 ft until the start of your next turn)

Misty Step (at will): Aurelia teleports to an unoccupied place within 30 ft. of her, that she can see. 

Counterspell: You attempt to interrupt a creature in the process of casting a spell. If the creature is casting a spell of 3rd level or lower, its spell fails and has no effect. If it is casting a spell of 4th level or higher, make an ability check using your spellcasting ability. The DC equals 10 + the spell's level. On a success, the creature's spell fails and has no effect. 

Evasive Fey Step: After taking Damage, Aurelia can use her reaction to cast the Misty Step Spell using a spell slot. 

Opportunity Attack: When a creature willingly leaves Aurelia's Range, she can use her reaction to cast the Chill Touch cantrip (+10 to hit. Hit: 3d8 necrotic damage)