Cube of Concordance
Aura moderate divination; CL 9th
Slot —; Price 20,000 gp; Weight 1 lb.
DESCRIPTION
This flawless cube of cobalt-blue glass measures 2 inches on each side. Each of its six faces bears a single magical rune. A creature may spend 10 minutes concentrating while holding the cube to attune itself to one unclaimed rune. Once attuned, that rune permanently represents that creature until the attunement is willingly relinquished by both the creature and the cube through another 10-minute ritual.
A cube may have no more than six attuned creatures, with one creature assigned to each rune. No creature may be attuned to more than one rune on the same cube.
As a standard action, an attuned creature may trace its own rune with a finger, mentally choosing one of the other attuned runes. If the chosen creature is on the same plane of existence, both creatures immediately hear one another's voices as though standing side by side. This communication functions regardless of physical distance, including through solid stone, underground, underwater, or within sealed chambers.
The connection lasts for up to 1 minute or until either participant ends it as a free action. No other attuned creatures hear the conversation.
Each attuned creature may activate the cube in this manner once per day.
LORE
The Cube of Concordance is prized by military officers, merchant consortiums, and small adventuring companies that require dependable long-distance communication. Its remarkable reliability has made it a favorite among organizations whose members routinely become separated by great distances.
Although the magic easily penetrates mountains, fortifications, and even the depths beneath the earth, it is fundamentally planar in nature. The enchantment simply fails if either participant is on a different plane of existence. Scholars speculate that the cube creates a temporary sympathetic resonance between its attuned runes rather than transmitting sound through conventional magical means.
Master enchanters often craft these cubes in small batches, assigning one to each expedition, fortress, or command structure. Because each cube permanently accommodates only six individuals unless attunements are willingly relinquished, they tend to foster close-knit groups rather than large organizations.
CONSTRUCTION
Requirements Craft Wondrous Item, sending; Cost 10,000 gp, 800 XP, 20 days.
KELWYN'S NOTES
One quickly discovers that silence is often more dangerous than dragons. Entire kingdoms have fallen because the right words arrived an hour too late. This humble blue cube cannot prevent tragedy, but it can certainly improve the odds.
The limitation of six individuals is, I suspect, quite intentional. Larger circles become increasingly difficult for the enchantment to maintain without introducing confusion or unintended listeners. A wizard who attempts to outsmart such elegant magical mathematics generally succeeds only in creating expensive blue gravel.
The one-minute duration likewise strikes a delightful balance. One learns to think before speaking, state one's purpose clearly, and reserve idle chatter for taverns rather than enchantments. I daresay the world would benefit if more conversations possessed such discipline.
Do remember that the cube recognizes people rather than places. A companion may wander from castle to cavern to ship's hold without disrupting the connection, provided they remain upon the same plane of existence. Distance is an inconvenience reserved for ordinary folk.
Should you ever encounter an empty Cube of Concordance, treat it with care. Few magical items begin their existence with six lifelong friendships waiting patiently to be inscribed upon their polished blue faces. There is something rather poetic about being the first name a piece of magic ever learns.






