Gengar can use a bonus action to cause one creature he can see within 30 feet to make a Wisdom saving throw. On a failure, the creature is frightened of him until the end of Gengar's next turn. He can use this feature a number of times equal to his Wisdom modifier, and regains all uses after a long rest.

Gengar can use a bonus action to regain an expended spell slot of a level no higher than half his proficiency bonus, rounded up. He can use this once per long rest.

Gengar can use a bonus action to invoke a spectral deathly aura for 1 minute. The aura extends 30 feet from him. When a hostile creature within the aura drops to 0 hit points, Gengar or one ally within the aura gains temporary hit points equal to Gengar's Wisdom modifier. He can use this once per long rest.

Gengar creates a small flame in his hand or extinguishes one within range. The flame sheds bright light in a 10-foot radius and dim light for another 10 feet.

Gengar touches a creature and restores 1d8 plus 4 hit points. This spell has no effect on undead or constructs.

A creature within 60 feet makes a Wisdom saving throw or becomes frightened of Gengar for up to 1 minute, repeating the save at the end of each turn.

Gengar summons three darts of magical force that automatically strike creatures he can see, dealing 1d4 plus 1 force damage per dart.

A creature within 60 feet makes a Constitution saving throw, taking 3d8 necrotic damage on a failure and half on a success.

Gengar creates a 15-foot-radius sphere of dim, silver-black light. The area is difficult terrain for enemies, and enemies that start their turns there take 2d6 necrotic damage on a failed Constitution saving throw.

Gengar touches a willing creature and grants it resistance to one damage type for up to 1 hour.

A creature within 60 feet makes a Wisdom saving throw or becomes paralyzed for up to 1 minute. It repeats the save at the end of each turn.

Up to three creatures within 30 feet regain 2d6 hit points each.

Gengar summons a sphere of negative energy that deals 3d8 necrotic damage to a creature within 60 feet, or half damage on a successful Constitution saving throw.

Gengar touches a weapon and gives it a plus 1 bonus to attack and damage rolls for up to 1 hour.

Gengar summons a swarm of grasping spectral hands in a 20-foot-radius sphere. Enemies take 3d8 necrotic damage on a failed Constitution saving throw and half on a success.

Gengar animates a corpse or pile of bones into a skeleton or zombie under his control for 24 hours.

Gengar touches a creature and removes one disease or one condition afflicting it, such as blindness, deafness, paralysis, or poison.

Gengar asks a corpse up to 10 days dead five questions. The corpse knows only what it knew in life and is not compelled to be truthful.

Gengar is a 5th-level spellcaster. Wisdom is his spellcasting ability. He can prepare cleric spells after each long rest, choosing from the cleric spell list. He uses a holy symbol as a spellcasting focus.

Gengar gains proficiency with martial weapons. He also gains the Reaper feature.

When Gengar casts a necromancy cantrip that normally targets only one creature, the spell can instead target two creatures within range and within 5 feet of each other.

Gengar can use Channel Divinity to make a melee spell attack against a creature within reach. On a hit, the target takes necrotic damage equal to 5 times his cleric level, or half as much on a miss if the attack would normally deal damage. He regains the use after a short or long rest.

Gengar can destroy undead of challenge rating 1/2 or lower when they fail against his Channel Divinity: Turn Undead effect.

Gengar gains a feat or ability score increase. He chooses the War Caster feat, allowing him to maintain concentration more reliably and cast a spell as an opportunity attack.

Gengar can secure free passage on sailing vessels for himself and his companions, provided he does not endanger the ship or abuse the crew's trust. He knows ships, ports, tides, and the practical customs of maritime crews.