Swarming Slime (5e Creature)
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Small ooze, unaligned
Damage Resistances acid
Amorphous. The slime can move through a space as narrow as 1 inch wide without squeezing.
Spider Climb. The slime can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Pseudopod. Melee Weapon Attack: +3 to hit, reach 10 ft., one target. Hit: 6 (2d4 + 1) bludgeoning damage, plus 7 (2d6) acid damage.
Swarming slimes are small orange oozes that gather in overwhelming numbers to attack and feed. Wordlessly coordinating amongst themselves, swarming slimes surround and kill even the most tenacious foes, then collectively feed on their prey, tearing it apart and dissolving it. As such, some particularly ruthless warlords and conquerors have been known to draw a surging wall of swarming slimes to attack a city before their forces besiege it, though the swarm must be given time to move on, lest their next meal be the soldiers that planned to take advantage of them, while the leaders of those settlements pay adventurers handsomely to fend off a particularly large swarm.
Ooze Nature. A swarming slime doesn't require sleep.