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Mountain Giant

Gargantuan · Giant · CR 21 · Neutral Evil

Source. Creature Codex
Armor Class
20 (natural armor)
Hit Points and Hit Dice
313 (19d20+114)
Challenge Rating CR
21

Ability Scores

Core attributes and their modifiers.

STR
26
+8
DEX
10
+0
CON
22
+6
INT
14
+2
WIS
20
+5
CHA
10
+0

Overview

Category Monsters
Size Gargantuan
Type Giant
Alignment Neutral Evil
XP 33000
Initiative Bonus +0

Movement

Walk 50 ft (15.2 m)
Swim 25 ft (7.6 m)
Climb 25 ft (7.6 m)
Crawl 25 ft (7.6 m)

Senses

Tremorsense 120 ft (36.6 m)
Passive Perception 22

Saving Throws

Constitution +13 Intelligence +9 Wisdom +12 Charisma +7

Skills

Athletics +15 Perception +12

Languages

Common, Giant, Terran

Resistances & Immunities

Damage Immunities
cold, fire, lightning, thunder; bludgeoning
Condition Immunities
charmed, frightened, paralyzed, petrified, stunned

Traits

Legendary Resistance (2/Day)

If the mountain giant fails a saving throw, it can choose to succeed instead.

Magic Resistance

A mountain giant has advantage on saving throws against spells and other magical effects.

Mountain Master

The mountain giant can move and shape the terrain around it. This trait works like the move earth spell, except it has no duration, and the giant can manipulate any stone, natural or worked.

Siege Monster

The mountain giant deals triple damage to objects and structures with its melee and ranged weapon attacks.

Actions

Boulder

+15 to hit, range 100/400 ft (30.5/121.9 m). Hit: 5d12+8 bludgeoning damage.

Ranged Weapon Attack: +15 to hit, range 100/400 ft., one target. Hit: 40 (5d12 + 8) bludgeoning damage.

Boulder Spray

Recharge 5–6

The mountain giant unleashes a barrage of boulders in a 60-foot cone. Each creature in that area must make a DC 22 Dexterity saving throw. On a failure, a creature takes 58 (9d12) bludgeoning damage and is knocked prone and restrained. On a success, the creature takes half the damage and isn't knocked prone or restrained. A target, including the restrained creature can take an action to make a DC 20 Strength (Athletics) or Dexterity (Acrobatics) check, freeing the restrained creature on a success.

Multiattack

The mountain giant makes two slam attacks.

Roar (Costs 2 Actions)

The mountain giant emits a tremendous growl. Each creature within 20 feet of the giant must make a DC 21 Constitution saving throw. On a failure, a creature takes 21 (6d6) thunder damage and is knocked prone. On a success, a creature takes half the damage and isn't knocked prone.

Slam

+15 to hit, reach 20 ft (6.1 m). Hit: 2d12+8 bludgeoning damage.

Melee Weapon Attack: +15 to hit, reach 20 ft., one target. Hit: 21 (2d12 + 8) bludgeoning damage.

Spawn Elemental (Costs 3 Actions)

A piece of the mountain giant's body tears away in the form of an earth elemental. The earth elemental acts on the same initiative count as the mountain giant, obeying the mountain giant's commands and fighting until destroyed. The mountain giant can have no more than five earth elementals under its control at one time.

Legendary Actions

Grasping Soil

Cost 1

The mountain giant commands the earth itself to assist in the fight. The giant chooses three creatures it can see within 60 feet. Each target must succeed on a DC 21 Dexterity saving throw or be restrained until the start of its next turn.

Roar

Cost 2

The mountain giant emits a tremendous growl. Each creature within 20 feet of the giant must make a DC 21 Constitution saving throw. On a failure, a creature takes 21 (6d6) thunder damage and is knocked prone. On a success, a creature takes half the damage and isn't knocked prone.

Spawn Elemental

Cost 3

A piece of the mountain giant's body tears away in the form of an earth elemental. The earth elemental acts on the same initiative count as the mountain giant, obeying the mountain giant's commands and fighting until destroyed. The mountain giant can have no more than five earth elementals under its control at one time.

About Mountain Giant

Mountain Giant is a gargantuan giant with a Challenge Rating of 21. It has a neutral evil alignment.

In combat, this creature maintains an Armor Class of 20 and possesses 313 hit points (derived from 19d20+114).

Mountain Giant has communication capabilities including Common, Giant, Terran. This allows it to interact verbally with various creatures and characters.

GM Tips: Using Mountain Giant

2 tips available

When using Mountain Giant in your D&D 5e campaign, consider these tactical approaches:

  • Boss Encounter: Suitable for climactic moments
  • Multi-phase Battle: Plan dramatic tension with multiple phases

Player Guide: Facing Mountain Giant

2 strategies available

When your party encounters this creature, keep these strategies in mind:

  • Major Threat: Prepare for epic battle
  • Resource Management: Conserve powerful abilities

Encounter Building Calculator

Standard Party Encounter (4-5 characters):

This creature is a medium encounter for a party of 4 characters of level 21.

High-Level Solo Encounter:

This creature is too powerful for a single level-20 character. You need 3.0 character(s) at maximum level (20) to face this creature.

Experience Point Thresholds:

  • Medium: 46,200 XP
  • Hard: 69,300 XP
  • Deadly: 92,400 XP

Based on D&D 5e Dungeon Master's Guide encounter building guidelines. CR roughly equals party level for medium encounters.

Frequently Asked Questions

What is the challenge rating of Mountain Giant?
Mountain Giant has a Challenge Rating of 21, making it appropriate for parties of level 21.0.
What type of creature is Mountain Giant?
Mountain Giant is a Gargantuan Giant, which affects how certain spells and abilities interact with it.
What languages does Mountain Giant speak?
Mountain Giant can communicate in Common, Giant, Terran.

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