Arclight Phoenix Matriarch

Legendary Resistance (3/Day). If the arclight phoenix matriarch fails a saving throw, he can choose to succeed instead.

Flyby. The arclight phoenix matriarch doesn’t provoke an opportunity attack when it flies out of an enemy’s reach. 

Grounded Lightning. The first time on a turn that the arclight phoenix matriarch touches the ground, an explosion of lightning bursts from it in a 10 foot radius. Each creature in the radius must make a DC 18 Dexterity saving throw or take 22 (4d10) lightning damage. However, the arclight phoenix matriarch may not take flight again until the end of its next turn.

Illumination. The arclight phoenix matriarch sheds bright light in a 30-foot radius and dim light for an additional 30 feet.

Lightning Form. The arclight phoenix matriarch can move through a space as narrow as 1 inch wide without squeezing. A creature that touches the arclight phoenix matriarch or hits it with a melee attack while within 5 feet of it takes 9 (2d8) lightning damage. In addition, the arclight phoenix matriarch can enter a hostile creature’s space and stop there. The first time it enters a creature’s space on a turn, that creature takes 9 (2d8) lightning damage.

Crackling Death. When the arclight phoenix matriarch dies, it explodes. Each creature within 30 feet of it must make a DC 18 Dexterity saving throw, taking 55 (12d8) lightning damage on a failed save, or half as much damage on a successful one. The explosion destroys the phoenix but leaves behind a Tiny, warm egg with a mizzium shell.

The egg contains the embryo of a new arclight phoenix matriarch. It hatches when it is in the area of a spell that deals lightning damage, or if a creature touches the egg and expends spell slots whose combined levels equal 13 or more. When it hatches, the egg releases a new arclight phoenix matriarch that appears in the egg’s space.

Multiattack. The arclight phoenix matriarch makes two Arclight Touch attacks.

Arclight Touch. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 36 (8d8) lightning damage and lightning jumps from the target to one creature of the phoenix’s choice that it can see within 30 feet of the target. That second creature must succeed on a DC 18 Dexterity saving throw or take 36 (8d8) lightning damage on a failed save, or half as much damage on a successful one.

Dive. If the arclight phoenix matriarch is flying and dives at least 30 feet toward a target and then hits with an Arclight Touch attack, the attack deals an extra 18 (4d8) damage to the target and that creature must make a DC 18 Dexterity saving throw or be knocked prone.

The arclight phoenix matriarch can take 3 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 arclight phoenix matriarch regains spent legendary actions at the start of its turn.

Move. The arclight phoenix matriarch moves up to it's speed.

Arclight Touch Attack. The arclight phoenix matriarch makes an Arclight Touch attack.

Dive Attack (Costs 2 Actions). The arclight phoenix matriarch makes a dive attack.