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Thessalhydra

CreatureHftTp. 412014

Huge monstrosity, unaligned

Armor Class
14 (natural armor)
Hit Points
69 (6d12 + 30)
Speed
swim 30 ft., 30 ft.
Challenge
4 (1,100 XP)
STR
19
+4
DEX
12
+1
CON
20
+5
INT
5
-3
WIS
10
+0
CHA
7
-2
Skills
Perception +4
Damage Immunities
acid
Condition Immunities
blinded; charmed; deafened; frightened; stunned
Senses
darkvision 60 ft., passive Perception 14

Actions

Multiattack.

The thessalhydra makes one maw attack and one Flurry of Bites.

Flurry of Bites.

Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 7 (1d6 + 4) piercing damage plus 10 (4d4) poison damage.

Maw.

Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 9 (1d10 + 4) piercing damage plus 5 (1d10) acid damage.

Tail Pincer.

Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 10 (1d12 + 4) slashing damage, and the target is grappled. As an action, the target can escape the grapple by succeeding on a DC 14 Strength (Athletics) or Dexterity (Acrobatics) check (its choice). Until this grapple ends, the thessalhydra can't use its tail pincer.

Acid Saliva 5.

The thessalhydra spits a glob of acid at a point it can see within 30 feet of it. Each creature within 10 feet of that point must make a DC 15 Dexterity saving throw, taking 18 (4d8) acid damage on a failed save, or half as much damage on a successful one.

Legendary Actions

Detect.

The thessalhydra makes a Wisdom (Perception) check with advantage.

Tail Swipe.

The thessalhydra makes a tail pincer attack.

Raw data
{
  "ac": [
    {
      "ac": 14,
      "from": [
        "natural armor"
      ]
    }
  ],
  "cr": "4",
  "hp": {
    "average": 69,
    "formula": "6d12 + 30"
  },
  "cha": 7,
  "con": 20,
  "dex": 12,
  "int": 5,
  "str": 19,
  "wis": 10,
  "name": "Thessalhydra",
  "page": 41,
  "size": [
    "H"
  ],
  "type": "monstrosity",
  "skill": {
    "perception": "+4"
  },
  "speed": {
    "swim": 30,
    "walk": 30
  },
  "__prop": "monster",
  "action": [
    {
      "name": "Multiattack",
      "entries": [
        "The thessalhydra makes one maw attack and one Flurry of Bites."
      ]
    },
    {
      "name": "Flurry of Bites",
      "entries": [
        "{@atk mw} {@hit 7} to hit, reach 10 ft., one target. {@h}7 ({@damage 1d6 + 4}) piercing damage plus 10 ({@damage 4d4}) poison damage."
      ]
    },
    {
      "name": "Maw",
      "entries": [
        "{@atk mw} {@hit 7} to hit, reach 5 ft., one target. {@h}9 ({@damage 1d10 + 4}) piercing damage plus 5 ({@damage 1d10}) acid damage."
      ]
    },
    {
      "name": "Tail Pincer",
      "entries": [
        "{@atk mw} {@hit 7} to hit, reach 10 ft., one target. {@h}10 ({@damage 1d12 + 4}) slashing damage, and the target is {@condition grappled}. As an action, the target can escape the grapple by succeeding on a {@dc 14} Strength ({@skill Athletics}) or Dexterity ({@skill Acrobatics}) check (its choice). Until this grapple ends, the thessalhydra can't use its tail pincer."
      ]
    },
    {
      "name": "Acid Saliva {@recharge 5}",
      "entries": [
        "The thessalhydra spits a glob of acid at a point it can see within 30 feet of it. Each creature within 10 feet of that point must make a {@dc 15} Dexterity saving throw, taking 18 ({@damage 4d8}) acid damage on a failed save, or half as much damage on a successful one."
      ]
    }
  ],
  "immune": [
    "acid"
  ],
  "senses": [
    "darkvision 60 ft."
  ],
  "source": "HftT",
  "passive": 14,
  "hasFluff": true,
  "hasToken": true,
  "miscTags": [
    "AOE",
    "MW",
    "RCH"
  ],
  "alignment": [
    "U"
  ],
  "legendary": [
    {
      "name": "Detect",
      "entries": [
        "The thessalhydra makes a Wisdom ({@skill Perception}) check with advantage."
      ]
    },
    {
      "name": "Tail Swipe",
      "entries": [
        "The thessalhydra makes a tail pincer attack."
      ]
    }
  ],
  "senseTags": [
    "D"
  ],
  "actionTags": [
    "Multiattack"
  ],
  "damageTags": [
    "A",
    "I",
    "P",
    "S"
  ],
  "hasFluffImages": true,
  "conditionImmune": [
    "blinded",
    "charmed",
    "deafened",
    "frightened",
    "stunned"
  ],
  "conditionInflict": [
    "grappled"
  ],
  "legendaryActions": 2,
  "referenceSources": [
    "IMR"
  ],
  "savingThrowForced": [
    "dexterity"
  ]
}