Augusto Calense, Master of the Archives

Legendary Resistance (3/rest). When he fails a saving throw, Augusto can choose to instead succeed on it.

Spellcasting. Augusto is a 20th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 20, +14 to hit with spell attacks). Augusto can cast the following wizard spells:
4/day: absorb elements, hold person, invisibility, shield

3/day: banishment, counterspell, dimension door, dispel magic, slow

2/day: disintegrate, dominate person, telekinesis, teleport

1/day: feeblemind, foresight, prismatic wall

Absorb Mana. After Augusto successfully uses the counterspell spell, he can choose to either regain hit points equal to 5 times the spell's level, or regain one use of a spell of a level equal or lower than the spell's level.

Supreme Mind. Augusto can maintain Concentration on two spells at once. Whenever he must make a Constitution saving throw to maintain Concentration, he does so twice, once for each spell. In addition, Augusto has advantage on Constitution saving throws made to maintain Concentration when he takes damage.

Soul-woven Cape (Magic item). The item grants Augusto the following bonus:

• a bonus to AC equal to his Intelligence modifier while wearing no armor,
• resistance to all damage but force, psychic, and radiant,
• spend on of its 5 charges to gain an immediate reactions.

Staff of the Magi (Magic item). The item grants Augusto the following bonus:

• +2 to attack and damage rolls made with it and to spell attack rolls made while holding it,
• advantage on saving throws against spells and magical effects.

Multiattack. Augusto can attack three times with energy bolt or draining grasp.

Draining Grasp. Melee Spell Attack: +14 to hit, reach 5 ft., one creature. Hit: 35 (5d12) necrotic damage and Augusto can choose to heal by half the amount or force the target to make a DC 20 Constitution save, reducing the target's maximum hit points of an amount equal to the damage dealt on a fail.

Energy Bolt. Ranged Spell Attack: +14 to hit, range 90 ft., one creature. Hit: choose one:

• 22 (4d10) fire damage.
• 18 (4d8) cold damage and the target has disadvantage on their next attack roll until the of Augusto's next turn.
• 14 (4d6) acid damage and the target can't regain hit points until the end of Augusto's next turn.
• 18 (4d8) lightning damage. Each creature within 5 feet of the target suffer half this damage.

Elemental Burst (Recharge 5-6). Augusto releases elemental energy in an area of his choice. He can choose to target a 60-feet cone, a 90-feet long 10-feet wide line, or a 15-feet radius within 90 feet of him. Augusto chooses one type of energy which determines the type of damage and saving throw each creature in the area must make (half damage on a successful one):

• Acid: 32 (8d6) acid damage, Constitution save. Each creature which fails the saving throw is poisoned until the end of their next round.
• Cold: 36 (8d8) cold damage, Constitution save. Each creature which fails the saving throw halves its movement speed until the end of their next round.
• Fire: 40 (8d10) fire damage, Dexterity save.
• Lightning: 32 (8d6) lightning damage, Dexterity save. Each creature which fails the saving throw can only take an action or a bonus action on their next turn.

Awakened Destruction (3/rest). Augusto forces a creature he can see within 30 feet of him to make a DC 20 Wisdom save. On a failed save, the target must use their next turn to move and attack the closest creature (chosen at random if more creature are possible targets).

Curse of the Chains (3/rest). Augusto forces a creature he can see within 60 feet of him to make a DC 20 Charisma save. On a failed save, the target is paralyzed until the end of their next turn.

Foul Nightmare (3/rest). Augusto forces a creature he can see within 30 feet of him to make a DC 20 Intelligence save. On a failed save, the target must choose to either be stunned until the end of Augusto's next turn, or suffer 28 (4d12) psychic damage.

Illusory Simulacrum (Recharge 5-6).  After he is hit by an attack, Augusto can spend his reaction to teleport himself to an unoccupied space within 30 feet, leaving an illusory duplicate behind, which becomes the attack's target.

Augusto can take five llegendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. Augusto regains spent legendary actions at the start of its turn.

Attack. Augusto attacks with draining grasp or energy bolt.

Burst (Costs 2 Actions). Augusto uses elemental burst if it's charged.

Spell (Costs 2 Actions). Augusto casts a spell of 5th level or lower.

Abyssal Visage. Augusto shows a brief visage of his master to any creature of his choice within 60 feet of himself. Each creature in the area must make a Wisdom saving throw (DC 20). On a failed save, they are frightened of Augusto. At the end of each of its turn, a frightened creature can attempt to save again, ending the effect on a success.