Blighted Shapeshifting Ash

Hive Mind. The Blighted Ash Elemental shares a hive mentality with other Blighted creatures, allowing them to act in unison.

Ashen Form. The Blighted Shapeshifting Ash can move through other creatures and objects as if they were difficult terrain. It takes 10 (3d6) force damage if it ends its turn inside an object.

Shapeshifting Aura. At the start of each of its turns, the Shapeshifting Ash can choose to shift its form into one of the following shapes until the start of its next turn:

• Solid Form: Gains advantage on Strength checks and saving throws, but has disadvantage on Dexterity checks and saving throws.
• Ethereal Form: Gains resistance to all damage types except force, and can’t make attacks.
• Hybrid Form: Gains +10 ft. to speed and can make one additional Ashen Strike attack when it takes the Multiattack action.

Blighted Scourge. Natural weapon attacks by the Shapeshifting Ash can infect creatures with the Blighted Scourge. A creature must make a DC 17 Wisdom saving throw or advance one stage in the Blighted Scourge infection.

Ashen Aura. A 15-foot radius around the Shapeshifting Ash is filled with swirling ash and blighted energy. Creatures that start their turn in this area must succeed on a DC 17 Constitution saving throw or take 18 (4d8) blighted energy damage and be afflicted by the Blighted Scourge.

Multiattack. The Shapeshifting Ash makes three Ashen Strike attacks.

Ashen Strike. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 22 (4d8 + 6) necrotic damage.

Blighted Pulse (Recharge 5-6). The Shapeshifting Ash emits a pulse of blighted energy in a 30-foot radius. Each creature in that area must make a DC 17 Wisdom saving throw, taking 45 (10d8) necrotic damage and advancing one stage in the Blighted Scourge on a failed save, or half as much damage on a successful one.

The Blighted Shapeshifting Ash 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. It regains spent legendary actions at the start of its turn.

• Ash Drift. The Shapeshifting Ash moves up to 20 feet without provoking opportunity attacks.
• Corruptive Lash (Costs 2 Actions). The Shapeshifting Ash makes one Ashen Strike attack.
• Ashen Reaping (Costs 3 Actions). The Shapeshifting Ash unleashes a blast of blighted ash. Each creature within 15 feet of the Ash must succeed on a DC 17 Dexterity saving throw or take 27 (6d8) necrotic damage and become blinded until the end of its next turn.