Astral Dragon

Legendary Resistances (3/Day)

If the Astral Dragon fails a saving throw, it can choose to succeed instead.

Astral Twin

When the Astral Dragon rolls Initiative, if it does not have an Astral Echo active, it creates one in an unoccupied space within 60 feet of itself. The Astral Echo is a shimmering duplicate made of astral light. It shares the dragon’s AC, has hit points equal to half the dragon’s current hit points, has Resistance to Bludgeoning, Piercing and Slashing damage, and acts as an extension of the dragon. Any Action the Astral Dragon takes can originate from either itself or its Astral Echo. The dragon and Echo share senses and positioning for the purpose of its abilities and attacks. The Echo vanishes if reduced to 0 hit points. When that happens, Dexterity Saving Throw for any creature within 20ft, DC15. Failure: 7 (2d6) Radiant damage and 7 (2d6) Fire damage. Success: Half damage.

Astral Sea Connection

The Astral Dragon cannot be affected by spells or magical effects that would banish it to other planes of existence, thanks to its connection to the Astral Sea.

Multiattack. The Astral Dragon makes two Rend attack and uses Astral Breath if available.

Rend. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 19 (2d12 + 5) slashing damage plus 9 (2d8) fire damage.

Astral Breath (Recharge 5–6). The dragon exhales a cone of shimmering starlight in a 60-foot cone. Each creature in that area must make a DC 19 Dexterity saving throw, taking 45 (10d8) force damage on a failed save, or half as much on a success. A creature that fails its save is also banished to a harmless demiplane of astral void until the end of its next turn, when it will reappear within 30ft of the point where they disappeared of the Astral Dragon's choice.

Innate Spellcasting (Psionics). The Astral Dragon’s innate spellcasting ability is Wisdom (spell save DC 19, +11 to hit). It can cast the following spells, requiring no components:

At will: mage hand, misty step
3/day each: dispel magic, blink
1/day each: telekinesis, banishment

Echo Step

The Astral Dragon teleports to an unoccupied space within 30 feet of its Astral Echo, or vice versa.

Astral Absorption

The Astral Dragon can choose to absorb the Astral Echo. It immediately disappears, and the Astral Dragon gains the following benefits:

Truesight 30ft, +10ft of reach to its melee attacks and they deal force instead of slashing damage and radiant instead of fire damage, Resistance to Bludgeoning, Piercing and Slashing damage, loses the Vulnerability to necrotic damage, regains an amount of hit points equal to how many hit points the Astral Echo had.

Astral Displacement

When the Astral Dragon or its Echo is targeted by an attack, the dragon can use its reaction to instantly swap positions with the Echo. The triggering attack then targets the new position.

Legendary Action Uses: 3. Immediately after another creature's turn, the dragon can expend a use to take one of the following actions. The dragon regains all expended uses at the start of each of its turns.
Pounce. The dragon moves up to its Speed and makes one Rend attack.
Echo Pulse. The Astral Echo releases a pulse of astral energy. Each creature within 20 feet of the Echo must succeed on a DC 17 Constitution saving throw or take 14 (4d6) radiant damage and be pushed 10 feet away. The dragon can't take this action again until the start of its next turn.
Shift Reality. The Astral Dragon and its Echo instantly swap places. When they do, each emits a burst of force. Each creature within 15 feet of either must succeed on a DC 17 Wisdom saving throw or take 18 (4d8) force damage and be knocked prone. The dragon can't take this action again until the start of its next turn.