Rathian (5e Creature)

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Huge dragon, unaligned

Armor Class 19 (natural armor)
Hit Points 243 (18d12 + 126)
Speed 50 ft., fly 80 ft.

23 (+6) 11 (+0) 25 (+7) 2 (-4) 13 (+1) 7 (-2)

Saving Throws Str +11, Dex +5, Con +12, Wis +6
Skills Perception +6, Stealth +5
Damage Vulnerabilities lightning
Damage Resistances fire
Senses darkvision 120 ft., passive Perception 16
Challenge 16 (15,000 XP)

Aggressive. As a bonus action, the rathian can move up to its speed toward a hostile creature it can see.

Keen Sight. The rathian has advantage on Wisdom (Perception) checks that rely on sight and disadvantage on saving throws against being blinded.

Legendary Resistance (3/day). If the rathian fails a saving throw, it can choose to succeed instead.


Multiattack. When in flight, rathian makes two claw attacks.

Bite. Melee Weapon Attack: +14 to hit, reach 5 ft., one target. Hit: 17 (2d10 + 6) piercing damage.

Claw. Melee Weapon Attack: +14 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage.

Tail. Melee Weapon Attack: +14 to hit, reach 15 ft., one target. Hit: 15 (2d8 + 6) bludgeoning damage plus 7 (2d6) poison damage. If the target is a creature, it must succeed a DC 17 Constitution saving throw or be poisoned for 1 minute. While poisoned the target takes 7 (2d6) poison damage until they are no longer poisoned.

Fire Breath (Recharge 5-6). The rathian exhales a fireball 60 feet in front of it, that explodes in a 20-foot sphere. Each creature in that area must make a DC 19 Dexterity saving throw, taking 56 (16d6) fire damage on a failed save, or half as much damage on a successful one.


The rathian can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The rathian regains spent legendary actions at the start of its turn.
Detect. The rathian makes a Wisdom (Perception) check.
Tail Attack. The rathian makes a tail attack.
Wing Attack (Costs 2 Actions). The rathian beats its wings. Each creature within 10 feet of the rathian must succeed on a DC 19 Dexterity saving throw or take 13 (2d6 + 6) bludgeoning damage and be knocked prone. The rathian can then fly up to half its flying speed.
Fire Barrage (Cost 3 Actions). The rathian exhales three fireballs in a 60-foot cone, each of which explode in a 20-foot sphere. Each creature in that area must make a DC 19 Dexterity saving throw, taking X (8d6) fire damage on a failed save, or half as much damage on a successful one.

The rathian is the female of her species, the male counterpart being the rathalos. This great predator is similar to a large, muted green wyvern with a long, protruding spike on the lower chin, a moss-like covering on the upper back and wingtips, and a bony club on the end of the tail tipped in poisonous quills. Fire and fury befall those who dare to scorn this mother.

Queen of the Land. Where the rathalos is a formidable areal opponent, the rathian compliments it by being far more maneuverable on the ground. When a pair find a place to nest, the rathalos patrols their territory from above and the rathian scouts the borders on the ground, protecting its territory with the wrath of a mother protecting her children.
Rathians can live a number of environments but tend to nest in temperate areas. While forests are favored, lone rathians, without a rathalos, have been known to nest in deserts. Rathians always seem to know when their eggs are being threatened, even if it seems like they reasonably shouldn’t, and will drop everything they are doing to protect their offspring.

Varient: Breakable Parts

If your dm wishes to give the players the Monster Hunter experience, a rathian may have the following trait.
Breakable Parts. Whenever the rathian takes 70 damage at one time, roll a d20 to determine what else happens to it:
1-10: The body armor breaks, reducing the rathian's AC by 2. Once the armor is broken, it cannot be broken further
11-14: The wings become torn up, reducing the rathian's flight speed by 20 ft.
15-18: The rathian receives severe trauma to the head and becomes stunned.
19-20: The rathian's tail is severed and it can no longer use its tail attack. This can only be done with a piercing or slashing weapon, otherwise, act as if the roll was between 15-18.

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