Amicable Amalgam

The forest is quiet, with only the sound of birds chirping and the rustling of leaves. You've been traveling for days, hoping to find something of interest in this ancient wood. That's when you see it - a large, translucent cube of shifting, pastel-colored goo in the middle of a small clearing. The Amicable Amalgam extends a pseudopod towards you, its movements slow and deliberate. The goo within it swirls gently, catching the light. The Amicable Amalgam appears as a large, translucent cube of shifting, pastel-colored goo, often with small, glittering particles suspended within it. Unlike its more aggressive cousins, this creature exudes an aura of calm and curiosity. It navigates its environment with surprising agility thanks to its extendable, roper-like pseudopods. When prey wanders too close, the Amalgam doesn't seek to harm, but rather to... collect. Its internal environment induces a temporary amnesia and a state of peaceful contentment in those it engulfs. It seems driven by a strange, unknown purpose, gently capturing creatures and holding them within its form before eventually releasing them, seemingly unharmed but with no memory of their time inside. Perhaps it's lonely, or perhaps it's studying the creatures it encounters in its own peculiar way.

Alright, let's blend the oddly satisfying nature of the Gelatinous Cube with the roper's grappling capabilities to create a surprisingly gentle giant!
Amicable Amalgam
Large ooze, extraordinarily neutral
Armor Class 15 (natural armor)
Hit Points 76 (9d10 + 27)
Speed 10 ft., climb 10 ft.

• Amnesiac Absorption. When a creature enters the Amicable Amalgam's space, it must make a DC 13 Wisdom saving throw. On a failed save, the creature becomes curious and willingly allows the Amalgam to engulf it. An engulfed creature is restrained and experiences a state of blissful forgetfulness, its mind temporarily emptied of worries and memories. This effect lasts as long as the creature is engulfed.
• False Appearance. While the Amicable Amalgam remains motionless, it is indistinguishable from a large, oddly colored rock formation.
• Gentle Grapplers. The Amicable Amalgam can extend up to four pseudopods at a time. Each pseudopod can grapple one Large or Medium creature. A grappled creature is restrained. The Amalgam cannot use the same pseudopod to grapple another target.
• Spider Climb. The Amicable Amalgam can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
  Actions
• Pseudopod. Melee Weapon Attack: +4 to hit, reach 30 ft., one target. Hit: The target is grappled (escape DC 13).
• Reel. The Amicable Amalgam gently pulls each creature grappled by it up to 15 feet straight toward it.
• Soothing Secretion. As a bonus action, the Amicable Amalgam can secrete a viscous, odorless fluid over a grappled creature's mouth.