Aethercube of Elemental Harmony (Floor 7)

Value: 750 GP

Description: The Aethercube of Elemental Harmony is a masterfully crafted cube, approximately four inches across each side, made from a mysterious crystalline substance that shimmers with a deep azure hue. Intricate filigree patterns swirl around its structure, and at its core, a hollow void pulses with a soft, ethereal light. Tiny, heart-shaped motes of energy float within, giving off a gentle aura of magic.

Properties:

• Elemental Attunement: As an action, the wielder can place their hand within the cube's central void and think of a natural element (fire, water, air, or earth). The cube will then harmonize with that element, and for the next hour, any elemental damage dealt by the wielder using spells or weapon attacks is enhanced to add an additional 1d4 damage of the chosen type.
• Protective Resonance: Once per long rest, when the wielder takes elemental damage, they can use their reaction to activate the cube, granting themselves resistance to that damage type until the end of their next turn.
• Harmony of Elements: When used in a ritual, the cube can act as a focus for spells that manipulate the natural elements, granting advantage on spellcasting ability checks for such spells.