Bogg the Fungoid

Brute. A melee weapon deals one extra die of its damage when Bogg hits with it (included in the attack).

Thick Hide: Bogg regains 5 HP whenever he deals 10 Damage or more. When he is below 50 HP, any Non-Magical Damage against him is halved. 

Keen Sight, Smell, and Hearing: Bogg has advantage on Wisdom (Perception) checks that rely on Sight, Smell, or Hearing. 

Multiattack: Bogg can make two attacks: one Stone Bludgeon attack and one Fungal Gas attack. 

Stone Bludgeon (melee): +6 to hit, reach 5ft., one target. Hit: 2d8 + 6 Bludgeoning Damage.

Fungal Gas (range): +5 to hit, 30/250ft., one target. Hit: 4d6 +5 Acid Damage

Aspergillosis: All targets within 50 feet of Bogg must make a DC 16 Constitution saving throw. On a failed save, target takes 10 Poison Damage and is Blinded for 10 minutes. At the end of their turn, target can make another Constitution saving throw. If they are successful, they are no longer Blinded. If they fail, they take another 5 Poison Damage. 

Fungal Hallucination: Chosen target within 30 feet of Bogg immediately takes 4 Acid Damage and must make a DC 15 Wisdom saving throw. On a failed save, target falls into a fungal hallucination making them Paralysed for 5 minutes (target returns to the real world when no longer Paralysed). Other targets within 30 feet of the Paralysed target take 4 Acid Damage. 

Cause Fear: Chosen target within 50 feet must succeed a DC 13 Charisma saving throw. On a failed save: become Frightened. At the end of its turns, the target can make another Charisma saving throw. On success the spell ends on the target. If target fails, it cannot save their next turn. 

Acid Absorption: Bogg absorbs Acid Damage, gaining 5 HP after being hit with Acid Damage. Target that hit Bogg with Acid Damage immediately loses 4 HP.