Plague Dragon by

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___
___
> ## Plague Dragon
>*Huge Dragon, Lawful Evil*
> ___
> - **Armor Class** 17 (natural armor)
> - **Hit Points** 249 (20d12 + 120)
> - **Speed** 40ft., fly 80 ft.
>___
>|STR|DEX|CON|INT|WIS|CHA|
>|:---:|:---:|:---:|:---:|:---:|:---:|
>|24 (+6)|14 (+2)|23 (+6)| 18 (+4)|15 (+2)| 16 (+3)|
>___
> - **saves** Dex +6, Con +12, Int +10, Cha +9
> - **Skills** Arcana +9, Intimidation +11, Perception +7, Deception +11
> - **Damage Resistances** Acid
> - **Damage Immunities** Poison
> - **Condition Immunities** Poisoned
> - **Senses** blindsight 60 ft., darkvision 120 ft., passive Perception 17
> - **Languages** Common, Draconic
> - **Challenge** 17 (18,000 XP)
> ___
> ***Legendary Resistance (3/Day).*** If the drake fails a save, it can choose to succeed instead.
>
> ***Reflux (1/Day).*** The first time the dragon reach half health or lower in battle it's breath weapon is recharged.
> ### Actions
> ***Multiattack (3) plus Frightful Presence.*** 
> - **Bite(1) (1/turn).** *Melee Weapon Attack:* +12 to hit, reach 10ft., one target. *Hit* 22 (4d8 + 6) piercing damage plus 4 (1d8) poison damage.
> 
> - ***Plagued Spit(1) (1/turn instead of Bite).*** . The dragon targets a creature within 60 feet, forcing it to make a DC 20 Dex save. **Failure:** Take 22 (4d10) poison damage also the creature is poisoned for 1 minute. The creature repeats the save at the end of each of its turns, if the creature was already poisoned it becomes plagued. **Success:** take half as much damage and is not poisoned or plagued.
> 
> - ***Claw(1).*** *Melee Weapon Attack:* +12 to hit, reach 5ft., one target. *Hit* 19 (3d8 + 6) slashing damage.
>
> - ***Tail(1)(1/turn).*** *Melee Weapon Attack:* +12 to hit, reach 15ft., one target. *Hit* 15 (2d8 + 6) bludgeoning damage.
>
> - ***Frightful Presence.*** Each creature of its choice within 120ft of the dragon that is aware of it must make a DC 20 Wis Save. **Failure:** A creature becomes Frightened for 1 minute. It can repeat its save at the end of each of its turns. **Success:** The creature is immune to the dragon’s Frightful Presence for 24 hours.
> 
> ***Plagued Breath (Recharge 5–6).*** The dragon exhales poisonous gas in a 60-foot cone. Each creature in that area makes a DC 20 Con Save. **Failure:** take 42 (12d6) poison damage and becomes plagued for 1 min. At the start of each of its turns for the duration, a plagued creature takes 5 (1d10) necrotic damage and deals 5 (1d10) poison damage to other creatures within 10ft of it. It can repeat its save at the end of each of its turns, ending the effect on a success. **Success:** take half damage and is not plagued. 
> A creature with immunity to poison damage that fails the save takes no damage, its poison immunity is reduced to resistance for the next hour.
> 
> ***Outbreak.*** The dragon target one creature that is plagued within 60 feet and provoke a violent reaction within it's body. The target make a DC 20 Con save **Failure:** Activate the effect of the plagued condition and suffer a random condition. Roll 1d4: On a 1, deafened; On a 2, blinded; On a 3, incapacitated; On a 4, stunned. **Success:** take no damage and do not suffer from a condition
> ### Reactions
> ***Tail Attack.*** When a creature the dragon can see within 10 feet hits the dragon with a melee attack, the dragon makes a tail attack against it.
> ### Legendary Actions(3)
> ***Detect (1).*** The dragon makes a Wisdom (Perception) check.
>
> ***Outbreak (1).*** The dragon uses Outbreak.>
> ***Poisonous Discharge (2).*** The area within 15 feet of the dragon is filled with thick black toxic smoke, the smoke spreads around corners, and the area is heavily obscured. The cloud lingers in the air until the end of the dragon next turn. When a creature enters the spell's area for the first time on a turn or starts its turn there, it must make a Con save. **Failure:** the creature is poisoned until the end of it next turn. The dragon can then fly up to half its fly speed.
>
> ***Master of affliction (2).*** The dragon ends one negative effect currently affecting it. It can do so as long as it has at least 1 hit point, even while unconscious or incapacitated.
>

\pagebreakNum

*Art: Blight Dragon by Chippy*
### Description
___

- ***Standing proudly atop the hill, this draconic creature presence is accompanied by a rolling cloud of sickly smoke .***

- **Immoral Scholar** Master in the art of crafting deadly and debilitating poisons, this dragon’s presence is usually accompanied by untimely death. A power hungry and knowledge seeking the plague dragon only seek to expend its territory and spread its influence to experiment on new subject.

- **Braggart and Liar.** This dragon take personal offense at any perceived challenge and great pleasure in destroying rivals. It claim great swathes of territory but care little for its organization and inner workings, and they perceive the creatures in that territory as test subject. Certain creature exchange an unflinching loyalty and rare materials for a shady protection .
-

### Item
#### Mask of the Plague lord
*Wondrous Item, Very rare (attunement)*
<hr>

*A pair of seemingly rusted pauldrons capable of leaking toxic clouds on command*
<hr>

- **Poison Negation.** You have resistance against poison damage. If you already have resistance to poison damage from another source, you instead have immunity to poison damage.

- **Dragon Sight.** You gain darkvision out to 60 feet. If you already have darkivison, its radius is increased by 60 feet.

- **Dragon Tongue.** You can speak and understand Draconic.

- **Poison Expert.** You can cast the **Detect Poison and Disease** spell at will.

- **Plagued breath** As an action, you can unleash a 30-foot cone of poisonous gas. Each creature in that area must make a DC 16 Dex save.
- **Failure:** take 6d6 poison damage and if the creature fails by 5 or more it is also plagued for 1 min. At the start of each of its turns for the duration its takes 3 (1d6) necrotic damage and deals 3 (1d6) poison damage to other creatures within 10ft of it. It can repeat its save at theend of each of its turns, ending the effect on a success. 
 **Success:** take half as much damage.
- Once this action is used, it can't be used again until the next dawn.

## Tactics
### Monster turn
##### Beginning of the turn
1. If **Plagued Breath** unavailable → roll to recharge 
2. If **Plagued Breath** unavailable and HP < Max HP/2 → **Reflux** (Once per day)

##### Targeting Priorities
1. Enemy that is *Plagued*
2. Enemy that is *Poisoned*
3. Enemy with the least constitution
4. Biggest group of Enemy

##### Movement
Use flying speed if possible
1. If target has no condition ∟ Move toward target
2. If target is poisoned or plagued ∟ Move out of reach of target

##### Action
1. If **Plagued Breath** available and two or more target → ***Plagued Breath***
2. If target is within 5 feet → ***Frightful Presence*** ∟ target is poisoned and/or plagued → Multiattack: ***Bite*** + ***Claws X 2*** ∟ target is not poisoned and/or plagued → Multiattack: ***Plagued Spit*** + ***Claws X 2***
3. If target farther than 5 feet ∟ target is not poisoned and/or plagued → ***Frightful Presence*** + Multiattack: ***Plagued Spit*** + ***Tail***. ∟ target is plagued → ***Outbreak***

### Player turn
##### Player Attack
1. If enemy are in melee range ∟ at least 1 enemy in melee and hit by an attack → Reaction : ***Tail Attack***

##### End of turn
1. If 1 or more enemy in melee ∟ Legendary action >= 2 → ***Poisonous Discharge*** ∟ Legendary action <= 1 → ***Outbreak***
2. If dragon if suffering from a negative condition → ***Master Affliction***
3. If no enemy in melee range ∟ Can see target → ***Outbreak*** ∟ Cannot see target → ***Detect***