Ooze Paraelemental (5e Creature)
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Large elemental, neutral
Damage Resistances acid; bludgeoning, piercing, and slashing from nonmagical attacks
Mud Form. The elemental can enter a hostile creature's space and stop there. It can move through a space as narrow as 1 inch wide without squeezing.
Freeze. If the elemental takes cold damage, it partially freezes; its speed is reduced by 20 feet until the end of its next turn.
Multiattack. The elemental makes two attacks.
Slam. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) bludgeoning damage and if the target is a creature, it is grappled (escape DC 15). While grappled this way the creature is restrained and can't breathe. The elemental can grapple one Large, or two Medium or smaller creatures at one time.
Throw Mud. Ranged Weapon Attack: +7 to hit, reach 30/120 ft., one target. Hit: 13 (2d8 + 4) bludgeoning damage and if the target is a creature it is restrained by the mud. The target can escape the mud and end the restrained condition by using its action to make a DC 14 Strength (Athletics) or Dexterity (Acrobatics) check.
An elemental creature of both water and earth, the ooze paraelemental glides across the ground like a living mudslide, smothering and choking the life out of any smaller creatures unfortunate enough to stand in its path, or the enemies of whatever mage or wizard conjured it. With the ability to squeeze into small spaces, the ooze paraelemental can hide almost anywhere there is damp ground or swampland, and ambush other unsuspecting creatures by acting like quicksand under their feet.