Gargantuan Monstrosity, Unaligned
AC 23 Greatshell Carapace    Initiative +0 (10)
HP 470 (24d12)
Speed 50 ft., Climb 40 ft.
Mod Save
STR 30 +10 +16
DEX 10 +0 +0
CON 28 +9 +15
Mod Save
INT 3 −4 −4
WIS 16 +3 +3
CHA 8 −1 −1
Resistances Bludgeoning and Piercing from nonmagical attacks
Immunities Frightened, Prone
Senses Tremorsense; Passive Perception 14
Languages None
CR 19 (XP 22,000; PB +6)
Traits

Greatshell Carapace

The Chasmfiend reduces all damage taken by 10.

Critical hits against it become normal hits.

Gemheart Vitality

When reduced below half hit points, the Chasmfiend enters a rage:

  • Gains one extra claw attack
  • Movement increases by 20 feet
  • Advantage on Strength saves

Titanic Weight

Creatures smaller than Huge have disadvantage on checks to grapple or restrain the Chasmfiend.

Actions

Actions

Multiattack

Two claw attacks and one bite.

Claw

+17 to hit.

Hit: 4d10 + 10 slashing.

Target grappled (escape DC 22).

Bite

+17 to hit.

Hit: 5d12 + 10 piercing.

Tail Sweep

Creatures within 30 feet make DC 22 Dexterity save.

Failure:

  • 8d10 bludgeoning damage
  • Knocked prone
  • Pushed 30 feet

*Roll a d6 on the start of the creatures turn, on a 6 the ability recharges.

Chasm Leap

The Chasmfiend leaps up to 60 feet.

Landing creates a shockwave.

Creatures within 20 feet must make DC 22 Strength save or take 10d10 bludgeoning damage and fall prone.

*Roll a d6 on the start of the creatures turn, on a 6 the ability recharges.

Legendary Actions

Legendary Actions

Move. Move half speed.

Claw. Make one claw attack.

Shriek (Costs 2). Creatures within 60 feet must succeed on DC 19 Wisdom save or become frightened until end of next turn.

*3 Actions, reset on start of creatures turn

JonathanT100

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