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Swarm of Corrupted Rats

CreatureWttHC2024

Medium monstrosity, unaligned

Armor Class
12
Hit Points
27 (6d8)
Speed
30 ft., climb 30 ft.
Challenge
1 (200 XP)
STR
9
-1
DEX
14
+2
CON
10
+0
INT
2
-4
WIS
11
+0
CHA
4
-3
Saving Throws
Dex +4
Damage Resistances
bludgeoning; piercing; slashing
Condition Immunities
charmed; frightened; grappled; paralyzed; petrified; prone; restrained; stunned
Senses
Darkvision 30 ft., passive Perception 10

Traits

Death Burst.

The rat explodes when it dies. con DC 10, each creature in a 10-foot Emanation originating from the rat. 2d4 Acid Damage. Half damage.

Swarm.

The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny rat. The swarm can't regain Hit Points.

Actions

Bite.

Melee Attack Roll: +4, Reach 5 ft. Hit: 6 (2d4 + 2) Piercing damage or 1d4 + 2 Piercing damage if the swarm is Bloodied.

Raw data
{
  "ac": [
    12
  ],
  "cr": "1",
  "hp": {
    "average": 27,
    "formula": "6d8"
  },
  "cha": 4,
  "con": 10,
  "dex": 14,
  "int": 2,
  "str": 9,
  "wis": 11,
  "name": "Swarm of Corrupted Rats",
  "save": {
    "dex": "+4"
  },
  "size": [
    "M"
  ],
  "type": {
    "type": "monstrosity",
    "swarmSize": "T"
  },
  "speed": {
    "walk": 30,
    "climb": 30
  },
  "trait": [
    {
      "name": "Death Burst",
      "entries": [
        "The rat explodes when it dies. {@actSave con} {@dc 10}, each creature in a 10-foot {@variantrule Emanation [Area of Effect]|XPHB|Emanation} originating from the rat. {@actSaveFail} {@damage 2d4} Acid Damage. {@actSaveSuccess} Half damage."
      ]
    },
    {
      "name": "Swarm",
      "entries": [
        "The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny rat. The swarm can't regain {@variantrule Hit Points|XPHB}."
      ]
    }
  ],
  "__prop": "monster",
  "action": [
    {
      "name": "Bite",
      "entries": [
        "{@atkr m} {@hit 4}, Reach 5 ft. {@h}6 ({@damage 2d4 + 2}) Piercing damage or {@damage 1d4 + 2} Piercing damage if the swarm is Bloodied."
      ]
    }
  ],
  "resist": [
    "bludgeoning",
    "piercing",
    "slashing"
  ],
  "senses": [
    "Darkvision 30 ft."
  ],
  "source": "WttHC",
  "passive": 10,
  "hasToken": true,
  "miscTags": [
    "MA"
  ],
  "alignment": [
    "U"
  ],
  "senseTags": [
    "D"
  ],
  "traitTags": [
    "Death Burst"
  ],
  "damageTags": [
    "P"
  ],
  "hasFluffImages": true,
  "conditionImmune": [
    "charmed",
    "frightened",
    "grappled",
    "paralyzed",
    "petrified",
    "prone",
    "restrained",
    "stunned"
  ],
  "savingThrowForced": [
    "constitution"
  ]
}