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Spinosaurus

Gargantuan · Beast · CR 13 · Unaligned

Source. Tome of Beasts 1 (2023 Edition)

15 (natural armor)

232 (15d20 + 75)

Ability Scores

Core attributes and their modifiers.

STR

DEX

-1

CON

INT

-4

WIS

CHA

Overview

Category Monsters

Size Gargantuan

Type Beast

Alignment Unaligned

XP 10000

Initiative Bonus -1

Movement

Walk 40 ft (12.2 m)

Swim 20 ft (6.1 m)

Climb 20 ft (6.1 m)

Crawl 20 ft (6.1 m)

Senses

Passive Perception 15

Skills

Perception +5

Traits

Hold Breath

The spinosaurus can hold its breath for 1 hour.

Reptilian Affinity

The spinosaurus never willingly attacks a reptilian Humanoid, such as a lizardfolk or dragonborn, unless attacked first. If magically forced to attack such a creature, the spinosaurus has disadvantage on attack rolls against it. This trait doesn’t function if the spinosaurus’s rider or tamer directs it to attack.

Siege Monster

The spinosaurus deals double damage to objects and structures.

Actions

Bite

+12 to hit, reach 15 ft (4.6 m). Hit: 4d12+7 piercing damage.

Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: 33 (4d12 + 7) piercing damage. If the target is a Large or smaller creature, it is grappled (escape DC 18). Until this grapple ends, the target is restrained, and the spinosaurus can't Bite another target.

Claw

+12 to hit, reach 10 ft (3 m). Hit: 4d6+7 slashing damage.

Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 21 (4d6 + 7) slashing damage.

Frightful Presence

Each creature of the spinosaurus' choice that is within 120 feet of the spinosaurus and aware of it must succeed on a DC 18 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the spinosaurus's Frightful Presence for the next 24 hours.

Multiattack

The spinosaurus makes one Bite attack and two Claw attacks.

Tail

+12 to hit, reach 20 ft (6.1 m). Hit: 2d8+7 bludgeoning damage.

Melee Weapon Attack: +12 to hit, reach 20 ft., one target. Hit: 16 (2d8 + 7) bludgeoning damage.

Legendary Actions

Move

Cost 1

The spinosaurus moves up to half its speed without provoking opportunity attacks.

Roar

Cost 1

The spinosaurus uses Frightful Presence.

Tail Attack

Cost 2

The spinosaurus makes one Tail attack.

About Spinosaurus

Spinosaurus is a gargantuan beast with a Challenge Rating of 13. It has a unaligned alignment.

In combat, this creature maintains an Armor Class of 15 and possesses 232 hit points (derived from 15d20 + 75).

GM Tips: Using Spinosaurus

2 tips available

When using Spinosaurus 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 Spinosaurus

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 13.

Solo Encounter:

A single character of level 17 (up to level 20) can face this creature in a medium to hard encounter.

Experience Point Thresholds:

Medium: 18,200 XP
Hard: 27,300 XP
Deadly: 36,400 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 Spinosaurus?: Spinosaurus has a Challenge Rating of 13, making it appropriate for parties of level 13.0.
What type of creature is Spinosaurus?: Spinosaurus is a Gargantuan Beast, which affects how certain spells and abilities interact with it.