Corpse Ooze

Unusual Nature. The parasite doesn’t require air or sleep.

Parasitic Leech. When the creature scores a Crit or reduces a creature to 0 hit points it gains temporay hit points equal to the damage dealt

Savage Attacker. Once per turn when you hit a target with a parasite weapon, you can roll the weapon’s damage dice twice and use either roll against the target.

Mask of Many Faces. Can cast Disguise Self on itself

Birth Parasite. Over the course of 1 min, you can extrude an independent piece of your patron, causing it to manifest in an unoccupied space within 5 ft. This parasite acts as a familiar, as if with the Find Familiar spell. This creature’s game statistics in the parasitic ooze stat block uses your proficiency bonus in several places.

Parasite Weapon. Melee Weapon Attack: +4 to hit, reach 15 ft., one creature. Hit: 8 (1d12 + 2) Slashing damage, the weapon of the Creature extends and slashes twice at enemy/enemies.

Eldritch Blast. Melee or Ranged Attack Roll: +6, reach 5 ft. or range 120 ft. Hit: 7 (1d10 + 3) Force damage.

Fear (1/Combat). Each creature in a 30-foot Cone must succeed on a Wisdom saving throw or drop whatever it is holding and have the Frightened condition for the duration.

A Frightened creature takes the Dash action and moves away from you by the safest route on each of its turns unless there is nowhere to move. If the creature ends its turn in a space where it doesn’t have line of sight to you, the creature makes a Wisdom saving throw. On a successful save, the spell ends on that creature.

Can'trip. You temporarily tangle the Weave around a creature within range that you can see. Until the start of your next turn, each time the creature tries to cast a cantrip or Level 1 spell whilst this spell affects it, it must succeed on a spellcasting ability check against your spell save DC or waste its action (but not a spell slot). The spell ends if the target moves out of the spell’s range

Polymorph. (1/day). Can change self into a CR 0 Creature as the Ooze melds the body to serve its purpose. It is identical to the creaute it mimics and only a DC 13 Insight will determine oddities in its body language.

Activate Parasite Weapon. It can utilise it's weapon to extend up to 15ft and deals 1d12 slashing damage which can attack twice in its turn.

Liquify Body (2/Day).  As a bonus action, you can transform your body into a viscous, liquid form for 10 minutes. You choose whether your equipment falls to the ground in your space or merges into your new form. For the duration, you can squeeze through a space as narrow as 6 inches wide, and moving through difficult terrain costs you no extra movement. After you use this feature, you can’t do so again until you finish a short or long rest.

Misty Step (2/Combat). Briefly surrounded by silvery mist, you teleport up to 30 feet to an unoccupied space you can see.