Brenia, Goddess of Time

Divine Awareness. Brenia knows if she hears a lie.

Legendary Resistance (5/Day). If Brenia fails a saving throw, she can choose to succeed instead.

Magic Resistance. Brenia has advantage on saving throws against spells and other magical effects.

Time Warp: Time is warped around Brenia in a 15ft Emanation. Whenever the Emanation enters a hostile creature’s space and whenever a hostile creature enters the Emanation or ends its turn there, the creature must make a Charisma Saving throw (DC 26) or be affected by the slow spell until the end of their next turn. A creature makes this save only once per turn.

Paradox. If Brenia would be reduced to 0 hit points, her current hit point total instead resets to 500 hit points, she recharges her Time Storm, and she regains any expended uses of Legendary Resistance. Additionally, Brenia can now use the options in the "Mythic Actions" section for 1 hour. 

Spellcasting. Brenia casts one of the following spells, requiring no Material components and using Intelligence as the spellcasting ability (spell save DC 27, +19 to hit with spell attacks): 
(at will): Identify, Dispel Magic, Legend Lore, Contact other Plane, 
3/day: Dirge, Greater Restoration 2/day: Plane Shift, Befuddlement  1/day: Time Stop, Foresight, Dream of the Blue Veil

Multiattack. Brenia makes four attacks, using Divine Burst.

Divine Burst. Melee or Ranged Attack Roll:  +19, reach 5ft. or range 120 ft. Hit: 31 (4d12+5) Force damage.

Time Storm: Recharge (4-6). Constitution Saving Throw: DC 27, each creature in a 120ft cone. Failure: 36 (8d8) force damage. Target gains 1 level of Exhaustion and is aged 5d4 years. A creature whose age extends beyond the regular lifespan for its species dies instantly. Success: Half damage.

Time Curse: range 5ft. Constitution saving throw (DC 27). Failure: 11d8 Force damage and have Disadvantage on attack rolls and ability checks. Also, choose one ability. While affected, the target has Disadvantage on saving throws made with the chosen ability. Success: Half damage.

The target must repeat the saving throw at the end of each of its turns until it gets three successes or failures. If the target succeeds on three of these saves, the effect ends. If the target fails three of the saves, the spell lasts for 7 days on it, or until a spell like remove curse is cast on it.

Alternate Reality: Brenia creates a perfect visual illusion of herself in an unoccupied space within 30ft. The illusion is tangible and occupies its space. It has 70 hit points and can be dismissed (no action required). A creature that takes a Study action to examine the image can determine that it is an illusion with a successful Intelligence (Investigation) check DC 27. While it persists, Brenia gains the following benefits.

Puppet. Brenia can cast spells, attack, or talk as though she were in the illusion’s space, but she must use her own senses.

Move. As a Bonus Action, you can move the illusion up to 30 feet to an unoccupied space you can see that is within 120 feet of yourself. Whenever she takes the Bonus Action to create or move the illusion, she can teleport, swapping places with the illusion.

Reality Flux. Brenia can force a creature to fail a saving throw.

Legendary Action Uses: 4.  Immediately after another creature’s turn, Brenia can expend a use to take one of the following actions. Brenia regains all expended uses at the start of each of her turns.

Divine Burst. Melee or Ranged Attack Roll:  +19, reach 5ft. or range 120 ft. Hit: 31 (4d12+5) Force damage.

Divine Step. Brenia teleports up to 120 feet to an unoccupied space within range Dexterity Saving Throw: DC 26, each creature in a 15-foot Emanation originating from Brenia at her destination space. Failure: 21 (6d6) Force damage. Success: Half damage.

Threads of Fate: Constitution Saving Throw: DC 27. Brenia targets 1 creature within 30ft. Failure: 21 (6d6) Force damage and the target ages 5d4 years. A creature whose age extends beyond the regular lifespan for its species dies instantly. Success:  half damage

If Brenia's Paradox trait has activated in the last hour, she can use the options below as legendary actions.

Paradox Strike: Brenia can move up to half of her movement speed and use Time Curse. Brenia can't take this action again until the start of her next turn.