Black Ooze Golem

Tiny Shadow Ooze Form:

Damage vulnerabilities. Radiant

Damage Immunities. poison, cold, lightning, poison, acid, fire, necrotic, thunder; bludgeoning, piercing, and slashing.

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

False Appearance. While the ooze remains motionless, it is indistinguishable from an oily pool or wet rock.

Sunlight Weakness.While in sunlight, the shadow has disadvantage on attack rolls, ability checks, and saving throws.

Metal Ooze Form:

Magnetic. The Black Ooze Golem Can only take form the of the Metal Ooze Form by taking in any metal around it. It grabs any and all metal objects in a 60ft x 60ft area, which then forms into a metal skeleton inside of the Ooze.

Immutable Form. The Black Ooze Golem is immune to any spell or effect that would alter its form.

Magic Weapon: The Black Ooze Golem weapon attacks are magical.

Grappler. The Black Ooze Golem has advantage on attack rolls against any creature grappled by it.

Damage Resistances piercing, and slashing from nonmagical attacks, bludgeoning.

Damage Immunities. acid, fire, necrotic, poison.

Corrode Metal. Any nonmagical weapon made of metal that hits the The Black Ooze Golem 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 that hits the ooze is destroyed after dealing damage.

The ooze can eat through 2-inch-thick, nonmagical metal in 1 round.

Attack Restriction. The Black Ooze Golem can't make any attacks in it's Tiny Shadow Ooze form.

Multiattack. The Black Ooze Golem makes two attacks,

Metal Ooze Tentacle Attack . Melee Weapon Attack: +7 to hit, reach 20 ft., Line Hit: 12 (1d6 + 5) Slashing damage plus 7 (2d6) acid damage, and if the targets is wearing nonmagical metal armor, their armor is partly corroded and takes a permanent and cumulative −1 penalty to the AC it offers. The armor are destroyed if the penalty reduces its AC to 10. The Black Ooze Golem can grapple the targets (escape DC 18).