Cold Halo Protocol
File Classification
Document Type: Event Log
Event Designation: Cold Halo Protocol
Alternate Designations: Halo Retreat Rule, Watchline Cold Sign
Estimated Date: During Incursion Escalation
Location: Amani-Indomitable joint watchline near a contested frontier pass
Associated Factions: Amani scouts, Indomitable frontier infantry, mixed watchline command
Associated Concepts: Thermal Inversion, Thermal Inversion Collapse, Mana Overload, Mixed-Force Doctrine
Event Type: Policy Change
Current Status: Confirmed
Historical Weight: Institutional
Summary
Cold Halo Protocol was a field response rule created after scouts recognized a reliable warning sign before high-output enemy casting: a visible cold shimmer forming around a rapidly heating body.
The protocol instructed nearby personnel to break line, widen spacing, and leave the caster’s immediate discharge path instead of pressing forward. It was a minor doctrine change, but it reduced casualties during several later frontier skirmishes.
Event Description
The source incident occurred during a short fight at a frontier pass. A hostile caster began preparing a large spell while retreating behind broken stone cover. Several soldiers moved to interrupt, assuming the caster was vulnerable during intake.
An Amani scout noticed frost forming in a ring around the caster’s boots while heat shimmer rose from the torso. The scout called for withdrawal rather than pursuit.
The command was almost ignored. Then the caster’s cloak stiffened with frost while the hands glowed. The nearest squad scattered sideways seconds before the spell discharged across the road.
The blast tore a shallow trench through the position the squad had been about to occupy. The caster died from overload after discharge, suggesting the spell had already entered an unstable thermal inversion state before release.
The watchline commander recorded the scout’s warning phrase, “cold halo, hot body,” in the after-action report.
Cause or Trigger
The protocol was triggered by repeated observation of pre-discharge thermal imbalance during high mana intake.
The specific incident showed that a caster displaying a cold field around a hot core might be close to thermal inversion collapse, making close interruption more dangerous than immediate withdrawal.
Immediate Outcome
Confirmed immediate outcome:
- One squad avoided the main discharge path.
- Two soldiers suffered minor frostbite and pressure injuries.
- The phrase “cold halo” entered local watchline warning calls.
Later Relevance
Cold Halo Protocol became a compact field rule for mixed patrols. It did not require a full thermal instrument, only enough training to recognize the visual and bodily signs of unstable mana intake.
Later versions were folded into mixed-force doctrine and paired with instructions for dealing with Ritual Machine overload, where the signs might appear as armor frost, heat vent bloom, or forced discharge countdown rather than a biological glow.