Corpse Totem. The Blighted Ovum follows a large corpse around that pretends to be the creature while the Blighted Ovum hides behind.
While within 60ft of the totem the Blighted Ovum is immune to all damage, all status effects and is only able to die through the use of a wish spell or a power word kill spell.
The totem has an AC of 18 (size large),
200 hit points,
Walking speed of 45ft,
It has a strength of 20 but shares all other stats and saving throws with the Blighted Ovum (since it's a mind controlled corpse). As a bonus action the Blighted Ovum can order the totem to move up to its movement speed and make 2 slam attacks.
Brimstone. The Blighted Ovum hurls a huge force of demonic energy from its mouth forming a line 100 feet long and 5 feet wide blasts out from the Blighted Ovum in a direction you choose. Each creature in the line must make a DC 16 Dexterity saving throw. A creature takes 24 (8d6) force damage damage on a failed save, or half as much damage on a successful one. If the creature being hit can't see the Blighted Ovum they must make the save at disadvantage and take an additional 6 (2d6) damage on a failed save.
Slam. (Totem Only) Melee Weapon Attack: +7 to hit, reach 5 ft., 1 target. Hit: 15 (2d10 + 5) bludgeoning damage.
Opportunistic Blast. When a creature leaves the Totem's attack range the Blighted Ovum can use Brimstone.
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