Aetherling

Type Humanoid (Shapeshifter)

Humanoid (Shapeshifter) Size Medium

Medium Armor Class 14

14 Hit Points 76 (17d8)/76 (17d8)/76 (17d8)

76 (17d8)/76 (17d8)/76 (17d8) Speed 30 ft.

STR DEX CON INT WIS CHA 9 (-1) 18 (+4) 10 (+0) 21 (+5) 14 (+2) 11 (+0)

Skills Acrobatics +4 (+8) Arcana +4 (+9), Stealth +4 (+8)

Acrobatics +4 (+8) Arcana +4 (+9), Stealth +4 (+8) Damage Resistances force, psychic

force, psychic Senses passive Perception 12

passive Perception 12 Languages Common, three other languages

Common, three other languages Challenge CR 12 Paragon

Paragon Endurance. The Aetherling has three pools of hitpoints. During each round of combat, it has one turn for each pool with a full set of actions and bonus actions, but it must divide its movement between those turns. Additionally, it may only cast one leveled spell between all of its turns. Damage is dealt to the first pool, followed by the second, followed by the third, etc. The Aetherling can't be healed beyond its current pool. When the Aetherling moves to a new pool, it may end any conditions or other effects that are currently affecting it.

Paragon Resistance (3/rest). When the aetherling fails a saving throw, it may choose to succeed instead.

Adjusting Form. At the beginning of each round, the Aetherling may choose Defense, Offense, or Neutral. If it chooses Defense, it has disadvantage on attack rolls, attack rolls have disadvantage against it, it has advantage on saving throws and creatures have advantage on saving throws against it until its next turn. If it chooses Offense, it has advantage on attack rolls, attack rolls have advantage against it, it has disadvantage on saving throws, and creatures have disadvantage on saving throws against it until the end of the round.

Innate Spellcasting. The Aetherling's innate spellcasting ability is Intelligence (spell save DC 17, +9 to hit with spell attacks). It can innately cast the following spells, requiring no material components:

At will: blink, disguise self, searing smite, thunderous smite, wrathful smite

3/rest each: alter self, blinding smite, branding smite, invisibility, mirror image, psychic spike, staggering smite, thunder step

1/rest each: banishing smite

Multitasking. The Aetherling can concentrate on up to three spells at any given time.

Spellcasting. The Aetherling is a 13th level spellcaster. Its spellcasting ability is Intelligence (spell save DC 17, +9 to hit with spell attacks.) It has the following Wizard spells prepared:

Cantrip (at will): dancing lights, lightning lure, mage hand, minor illusion, true strike

1st level (4 slots): color spray, sleep

2nd level (3 slots): hold person, rope trick

3rd level (3 slots): counterspell, dispel magic, slow, summon lesser demons

4th level (3 slots): conjure minor elementals, dimension door, hallucinatory terrain, polymorph (self only)

5th level (2 slots): conjure elemental, far step, wall of force

6th level (1 slot): arcane gate, scatter

7th level (1 slot): teleport