Rathian (5e Creature)
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Huge dragon, unaligned
Saving Throws Str +11, Dex +5, Con +12, Wis +6
Legendary Resistance (3/Day). If the rathian fails a saving throw, it can choose to succeed instead.
Multiattack. When in flight, the rathian makes two claw attacks.
Bite. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 17 (2d10 + 6) piercing damage.
Claw. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage.
Tail. Melee Weapon Attack: +11 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 gout of flame at a point it can see within 60 feet of it. Each creature in a 20-foot-radius sphere centered on that point 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 fire spreads around corners, and it ignites flammable objects in that area that aren't being worn or carried.
Aggressive. The rathian moves up to its speed toward a hostile creature that it can see.
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.
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 aerial 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.
Variant: Breakable Parts
If your DM wishes to give the players the Monster Hunter experience, a rathian may have the following trait.