Batch of Sickly Trifles

The batch can occupy another creature's space and vice versa, and it can't gain hit points or temporary hit points. The batch can move through a space as narrow as 1 inch wide without squeezing.

The batch can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

The batch adds your proficiency bonus to the damage it deals, and hit points it loses, when it uses its Slather action to successfully slather a creature.

Every foot of movement while in the batch's space costs 1 extra foot.

The batch moves up to its speed. Whenever the batch enters a creature's space, the trifles attempt to cover the creature in the slime that makes up their own bodies. The creature must make a Dexterity saving throw (DC = 8 + your proficiency bonus + your Wisdom modifier). On a failed save, the creature takes 1d4 + your Wisdom modifier acid damage, and is slathered. The slathered creature has its speed reduced by 10 feet and gains disadvantage on ability checks until someone takes an action to wipe off the offending slime.

The batch loses hit points equal to the number rolled on the d4 whenever it successfully slathers a creature.

The batch moves up to its speed. If the batch ends its movement in an unoccupied space, the trifles gather into a wobbling mass and lose their Amorphous Swarm property. Before the end of your next turn, a creature can bounce off the congealed trifles to double its jump distance. The impact returns the batch to its usual form.