Aspect of Tiamat (Variant)

Innate Spellcasting (1/Day). The Aspect can innately cast Divine Word (spell save DC 19). Its spellcasting ability is Charisma.

Legendary Resistance (1/Day). If the Aspect fails a saving throw, it can choose to succeed instead.

Regeneration. If the Aspect has at least 1 hit point, it regains 10 hit points at the start of its turn.

Multiple Heads. The Aspect can take one reaction per turn, rather than only one reaction per round. It also has advantage on saving throws against being knocked unconscious.

Multiattack. The Aspect can use its Frightful Presence. It then makes three attacks: two with its claws and one with its tail.

Claw. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 12 (2d6 + 5) slashing damage.

Tail. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 14 (2d8 + 5) bludgeoning damage.

Frightful Presence. Each creature of the Aspect's choice that is within 120 feet of the Aspect and aware of it must succeed on a DC 19 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the the Aspect's Frightful Presence for the next 24 hours.

The Aspect can take 5 legendary 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. The Aspect regains spent legendary actions at the start of its turn.

 The Aspect's legendary actions are associated with its five dragon heads (a bite and a breath weapon for each). Once the Aspect chooses a legendary action for one of its heads, it can't choose another one associated with that head until the start of its next turn.

Bite. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 16 (2d10 + 5) piercing damage plus 7 (2d6) acid damage (black dragon head), lightning damage (blue dragon head), poison damage (green dragon head), fire damage (red dragon head), or cold damage (white dragon head).

Black Dragon Head (Costs 2 Actions). The Aspect exhales acid in a 60-foot line that is 5 feet wide. Each creature in that line must make a DC 19 Dexterity saving throw, taking 27 (6d8) acid damage on a failed save, or half as much damage on a successful one.

Green Dragon Head (Costs 2 Actions). The Aspect exhales poisonous gas in a 60-foot cone. Each creature in that area must make a DC 19 Dexterity saving throw, taking 28 (8d6) poison damage on a failed save, or half as much damage on a successful one.

Blue Dragon Head (Costs 2 Actions). The Aspect exhales lightning in a 90-foot line that is 5 feet wide. Each creature in that line must make a DC 19 Dexterity saving throw, taking 33 (6d10) lightning damage on a failed save, or half as much damage on a successful one.

Red Dragon Head (Costs 2 Actions). The Aspect exhales fire in a 60-foot cone. Each creature in that area must make a DC 19 Dexterity saving throw, taking 31 (9d6) fire damage on a failed save, or half as much damage on a successful one.

White Dragon Head (Costs 2 Actions). The Aspect exhales an icy blast in a 60-foot cone. Each creature in that area must make a DC 19 Dexterity saving throw, taking 27 (6d8) fire damage on a failed save, or half as much damage on a successful one.