Vok, Corrosive Killer (tier 1)

Amorphous. Vok can move through a space as narrow as 1 inch wide without squeezing.

Corrosive Form. A creature that touches Vok or hits them with a melee attack while within 5 feet of it takes 4 (1d8) acid damage. Any nonmagical weapon made of metal or wood that hits  Vok corrodes. After dealing damage, the weapon takes a permanent and cumulative −1 penalty to damage rolls. If its penalty drops to −5, the weapon is destroyed.

Nonmagical ammunition made of metal or wood that hits Vok is destroyed after dealing damage.

Vok's corrosive skin can eat through 2-inch-thick, nonmagical wood or metal in 1 round.

Spider Climb. Vok can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Evasion. If Vok is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, the assassin instead takes no damage if it succeeds on the saving throw, and only half damage if it fails.

Caress of the Slithering End. Vok's signature tactic of killing, is an innocent embrace. Victims will soon find themselves dissolving in the hands of what they perceived to be an innocent bystander. Vok has advantage when grappling a surprised target. Every turn Vok is grappling a target they can move a target -10ft of their movement. The grappled target can make a Str(Athletics) or a Dex(Acrobatics) contest against Vok to reduce their movement by another 5ft. A contest result over 5 of Vok's result adds another 5ft.

Grappler. Vok has advantages on attack rolls against a creature they are grappling. They can use an action to make a grapple check and restrain the target on a success. 

Advanced Symbiosis. Vok's body is coated in a symbiotic ooze similar to Kryzin's Ooze. Vok's ooze behaves like a sentient, inky black, flowing robe. Typically darker hues due to the ooze's heritage of the Black Pudding and Grey Ooze. The ooze can shift to look like any pair of clothing and partially change Vok's features. An eccentric actor, Vok can only be distinguished with an insight contest against their deception. However the symbiotic nature of the ooze makes them vulnerable to the remove curse. spell. If Vok is targeted by a remove curse, Vok makes a constitution saving throw (dc the caster's spell dc). On a fail Vok takes 4d12 necrotic damage. If Vok dies the ooze consumes their body and becomes a black pudding that regrows Vok after 1d4 days. 

Acid Breath (Recharge 5-6). As an action Vok can unleash a spray of dark corrosive mucus in a 30-foot cone. Each creature in the cone must make a DC 15 Dexterity saving throw, taking 36 (8d8) acid damage on a failed save, or half as much after a success. Any creature that fail under 5 of the DC, get pulled 10 feet towards Vok 

The Hungering Night. Like a corrosive blanket, Vok instead extends their ooze to seal off an opening or hallway over 15 feet. 

Multi Attack. Vok can make two Pseudopod attacks or replace one of those attacks with the grapple action.

Pseudopod. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage plus 18 (4d8) acid damage. In addition, nonmagical armor worn by the target is partly dissolved and takes a permanent and cumulative −1 penalty to the AC it offers. The armor is destroyed if the penalty reduces its AC to 10.

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I'm a Parent! The Heirs of Kryzin! If Vok is subjected to lighting damage, Vok's body begins to spasm before a rapid growth splits off it's progenitor. Vok creates a Puddling, its hit points are equal to the amount of lighting damage. The amount of hit points modifies the puddling's size, saves, and modifiers. The puddling takes its initiative after Vok. 

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