Agent of The Unknown

Unknown Protection. The Agent has a + 20 bonus to AC. This is added in its natural armour.

Spellcasting. The Agent is an Innate spellcaster. Its spellcasting ability is [Charisma] (spell save DC 40, +16 to hit with spell attacks). The Agent has the following spells prepared, requiring no material components:
At will: Chill touch (level 17), Detect Magic, Dispel Magic (level 9), Telekinesis. 

5/day: Chain Lightning, Antimagic Field, Finger Of Death, Teleport

3/day: Sunburst, Mind Blank, Divine Word, Plane Shift

1/day: Prismatic Wall

Magic Resistance. The agent has advantage on Saving throws against Spells and Magic Effects.

Magical Attacks. The agent's attacks are magical.

Action Name. The Agent makes 5 melee or ranged attacks It can replace up to 3 attacks with spell castings.

Force Rend. Melee Weapon Attack: +300 to hit, reach 10 ft., 1 target. Hit: 2000 (100d20 + 2000) force damage. 

Laser. Ranged Weapon Attack: +200 to hit, range 200 ft., 1 target. Hit: 900 (30d20 + 1,200) force damage.

Enter the description of how bonus actions work for your monster here.

Deadly Rebuke. When a creature attacks the Agent, it makes a laser attack.

At the end of another creature’s turn, a creature can use a legendary action. A creature with legendary actions has separate actions it can choose from. Each one costs a different amount of “actions”. Only one legendary action can be used at a time and the creature cannot use legendary actions while incapacitated. The creature regains its legendary actions at the start of its next turn.

Laser (Costs 1 Action).  The Agent uses it's laser attack twice.

Disaster Blade (Costs 2 Actions).  The Agent forces all creatures within 100ft to make a DC 40 Wis saving throw or gain the poisoned and stunned condition and take 80 (16d10) force and Slashing damage.

Gaze Of The Unknown (Costs 3 Actions) The Agent looks at up to 20 creatures that are within 50 ft of each other. They drop to 0 hit points and have a disadvantage on Death Saving Throws. 

Enter the description for how mythic actions work for your monster here.

Mythic Action Name (Costs # Actions). Enter the description for your mythic action.