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Amulet of Prismatic Power

wondrous item (amulet), very rare (requires attunement by a spellcaster)

Amulet of Prismatic Power
Illustration: Timmmi (using AI-tools like Midjourney & Dall-E)

This amulet has a large rainbow facet gem set in the center of a gold and platinum filigree. The gem sparkles with different colors as it catches the light. This amulet was created by a powerful archmage who wanted to harness the power of the rainbow. They infused the gem with prismatic energy, but he could not control its unpredictable nature. The amulet changes its magic every day, sometimes for better, sometimes for worse.

Prismatic Spells

At the end of every long rest, roll and consult the table below to see which spell the amulet contains.
Once you use the amulet to cast a spell, you can't use it again until the next dawn.

Spells

d100SpellDescription
1-29
Color Spray (illusion)
Level: 1
Casting Time: 1 action
Concentration: No
Ritual: No

6d10 creatures hp are dazzled in ascending order of their current hp (+2d10 hp/lvl).

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You can use an action to cast the Color Spray spell at 4th level without using a spell slot or material components
30-59
Hypnotic Pattern (illusion)
Level: 3
Casting Time: 1 action
Concentration: Yes
Ritual: No

Creatures in a 30-ft cube must succeed on a Wis. save or be charmed and incapacitated, with a speed of 0.

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You can use an action to cast the Hypnotic Pattern spell without using a spell slot or material components. The pattern resembles a rainbow, light refracting through a prism or similar effects
60-89
Prismatic Spray (evocation)
Level: 7
Casting Time: 1 action
Concentration: No
Ritual: No

Creatures in a 60-ft cone must succeed on a Dex. save or take 10d6 damage of a randomly determined type.

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You can use an action to cast the Prismatic Spray spell without using a spell slot or material components
90-100
Prismatic Wall (abjuration)
Level: 9
Casting Time: 1 action
Concentration: No
Ritual: No

Create a multi-layered wall that inflicts different effects and damage depending on the layer.

View on dndbeyond.com

You can use an action to cast the Prismatic Wall spell without using a spell slot or material components

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