Dungeon Rifts — Formation and Classification
A dungeon rift is a naturally occurring break in the boundary between the surface world and the mana saturated sub-strata beneath it. Rifts form when ambient mana concentrations in a given area exceed the structural tolerance of the earth above a mana vein, creating a downward passage of variable depth and danger.
Rifts are classified by floor count and the strength of the beasts they generate. A single floor rift producing D rank beasts is considered a minor hazard, manageable by a small team of trained hunters and cleared on a routine schedule by local guild offices. A multi-floor rift producing A rank or higher beasts is classified as a major incursion and triggers a formal guild response involving senior hunters and in severe cases military support.
The beasts generated within rifts are not creatures that have wandered in from the surface. They are mana constructs, formed from the dense ambient mana of the sub-strata and shaped over time by that mana's inherent tendencies. The deeper the floor the denser the mana and the stronger the construct. Rift beasts do not eat, do not reproduce, and do not leave the rift of their own accord under normal circumstances. When a rift is left uncleared for extended periods the beast population increases and the stronger specimens begin to develop territorial behaviours that can eventually result in surface emergence, at which point the situation is reclassified as a rift breach and treated as an emergency.
The Adventurers Guild
The Adventurers Guild is the kingdom's primary institution for the management of beast threats, rift incursions, and wilderness hazards. Founded in year 318 following the Mana Surge, it operates offices in every town of significant size across Aethoria's fourteen provinces.
Guild membership is open to any person who can pass the basic registration assessment. Members are ranked on the standard strength scale from FF upward, with rank determined by periodic assessment and updated based on hunt performance and guild evaluations. Higher ranked members receive access to higher tier commissions, better material rates, and in the upper ranks, direct crown contracts for major threat management.
The guild maintains strict records of member activity. Rank progression outside of normal parameters is flagged automatically and reviewed by senior guild staff. This is not a punitive measure. It is a resource identification measure. The kingdom is interested in unusual talent.
Surface Beasts
Not all beasts originate from dungeon rifts. Surface beasts are naturally occurring creatures whose mana core content has been elevated by the post-Surge ambient mana environment to levels that make them genuinely dangerous to untrained humans. The distinction between a surface beast and a mundane animal is not always visually obvious but is immediately apparent to anyone with functional Mana Sense. Surface beasts carry a mana signature. Mundane animals do not.
Surface beast strength follows the same ranking scale as rift beasts and human fighters. A D rank surface beast is considered a manageable threat for a trained C rank hunter working alone. Anything above B rank is considered a multi-person engagement under standard guild protocol.
Standard guild protocol is, in practice, a suggestion for hunters operating above A rank.