[Kaiju Hunter's Cache] Roaring Thunder (Patreon)

Roaring Thunder

Wondrous item, rare

Component: Pouch of Plant (dragonlily) seeds

Along the Hakuryu river, seasonal celebrations are often marked with pyrotechnic displays, and contests are held to determine which settlement can create the most dazzling fireworks. The first roaring thunder was made by Soji, an up-and-coming craftsman who to this day maintains that his five-year victory streak was more than worth a couple of lost fingers.

Draconic Fireworks. As a bonus action, you can light this firework and release it. It rises up to 500 feet into the air (you decide the height when you take the bonus action), where it detonates harmlessly, creating an illusory image of a roaring dragon in a 15-foot square. When you light the firework, choose one of the options below:

• Terrifying Display. Each creature within 60 feet of the dragon must succeed on a DC 15 Wisdom saving throw or be frightened of the dragon until it disappears. The dragon’s image lasts for 1 minute.
• Shattering Cry. The dragon lets out a piercing roar and immediately vanishes. Each creature within 60 feet of the dragon must make a DC 15 Constitution saving throw, taking 8d6 thunder damage on a failed save, or half as much damage on a successful one.

If the firework’s vertical path is obstructed and it can’t reach 30 feet into the air, it drops back down and explodes on you. You take 4d6 fire damage.

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Very rare variant: Increase the DC to 16. The item has the Lilystars property.

• Lilystars. Regardless of which option you choose, when the firework detonates as per the Draconic Fireworks property, four pyrotechnic stars whizz through the air, each one making a ranged spell attack against a creature of your choice within 60 feet of the dragon (+8 to hit). On a hit, each star deals 2d4 damage of one of the following damage types, depending on the colour of the dragonlily from which the firework was crafted: cold (white), lightning (blue), radiant (yellow), or thunder (orange).

Legendary variant: The item has the Lilystars property. Increase the DC to 17, the attack bonus to +9, and the number of pyrotechnic stars to eight.