Ghast Gravecaller

Constitution Saving Throw: DC 13, any creature that starts its turn in a 5-foot Emanation originating from the ghast. Failure: The target has the Poisoned condition until the start of its next turn. Success: The target is immune to this ghast's Stench for 24 hours.

The ghast casts one of the following spells, requiring no Material components and using Intelligence as the spellcasting ability:

At will: Speak with Dead, Thaumaturgy

The ghast makes two Horrific Necrosis attacks. It can replace one attack with a Claw attack.

Melee Attack Roll: +6, reach 5 ft. Hit: 13 (3d6 + 3) Slashing damage. If the target isn't an Undead, it has the Paralyzed condition until the end of its next turn.

Melee or Ranged Attack Roll: +7, reach 5 ft. or range 120 ft. Hit: 15 (2d10 + 4) Necrotic damage, and the target has the Frightened condition until the end of its next turn.