# Helm of Brilliance > [!info] Item Details > | | | > |---|---| > | **Category** | Wondrous Items | > | **Rarity** | Very Rare | > | **Attunement** | Yes | > | **Source** | DMG p.173 | --- ## Description This dazzling helm is set with 1d10 diamonds, 2d10 rubies, 2d10 fire opals, and 2d10 opals. Any gem pried from the helm crumbles to dust. When all gems are lost, the helm loses its magic. While wearing it, you gain the following benefits: - You have resistance to fire damage. - Undead that start their turn within 60 feet of you take 1d6 radiant damage. - You can use an action to cast one of the following spells (consuming the gem): daylight (opal), fireball at 5th level (fire opal, DC 18), prismatic spray (diamond, DC 18), wall of fire (ruby, DC 18). Roll a d20 if you are wearing the helm and take fire damage as a result of failing a saving throw against a spell: on a 1, the helm emits beams of light from its remaining gems, each gem targeting a creature at random that is within 60 feet of you, not including you, until all creatures are targeted. Each creature targeted by a beam must succeed on a DC 17 Dexterity saving throw or take radiant damage equal to the number of gems in the helm. The helm then loses its remaining gems. --- ## Properties - **Resistance to fire damage** while worn. - Undead within 60 ft take **1d6 radiant damage** at the start of their turn. - Action: cast *daylight* (opal), *fireball* 5th level (fire opal, DC 18), *prismatic spray* (diamond, DC 18), or *wall of fire* (ruby, DC 18) — consuming the gem used. - On a natural 1 after failing a fire-damage spell save: remaining gems **fire radiant beams** at all creatures within 60 ft, then the helm loses them. - Requires attunement.