Multiattack

The malleable makes two flesh tendril attacks.

Flesh Tendril

Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 14 (3d6 + 4) bludgeoning damage. If the target is a Large or smaller creature, it is grappled (escape DC 14).

Psychic Drain

One creature grappled by the malleable must make a DC 14 Intelligence saving throw, taking 22 (5d8) psychic damage on a failed save, or half as much damage on a successful one. The target's hp maximum is reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target dies and becomes a minor malleable if this effect reduces its hp maximum to 0.

Join Malleables

As long as the malleable is within 10 feet of at least one other moderate malleable, each moderate malleable in range can use this action option at the same time to join together to create a larger malleable. The new malleable's hp total is equal to the combined hp total of all the moderate malleables, and it is affected by any conditions, spells, and other magical effects currently affecting any of the moderate malleables. The new malleable acts on the same initiative count as the malleables that formed it and occupies any unoccupied space that previously contained at least one of the malleables that formed it. * Two moderate malleables can join to create one major malleable. * Four moderate malleables can join to create one massive malleable.

Separate Malleables

The moderate malleable can split into four minor malleables. The new malleables' hp totals are equal to the moderate malleable's hp total divided by 4 (rounded down) and are affected by any conditions, spells, and other magical effects that affected the moderate malleable. The new malleables act on the same initiative count as the moderate malleable and occupy any unoccupied space that previously contained the moderate malleable.