Frostweave Theorist's Mantle
Forged in a workshop buried beneath a glacier by an artificer-sage who believed cold slowed not just flesh but thought itself — and that slowing thought was the first step to controlling it. The armor's overlapping frost-crystal plates hum with a faint, rhythmic resonance, like ice cracking deep in a mountain lake. Scholars who have studied surviving samples report that the runes along its collar rearrange subtly between examinations, though no two witnesses have ever agreed on what they spell.
Mechanics
A suit of frost-latticed medium armor that functions as an arcane focus and can release stored cold energy to slow nearby enemies.
Arcane Focus Integration
This armor counts as an arcane focus. While wearing it, you may use the armor itself as your spellcasting focus, weaving somatic components through gestures of the gauntlets and verbal components through runes etched along the collar. This requires no additional action or hand to be free.
Glacial Lattice
While wearing this armor, you have resistance to cold damage.
Frost Pulse
As a bonus action, you can expend 1 charge to release a burst of numbing cold. Each creature within 10 feet of you must succeed on a DC 13 Constitution saving throw or have its speed reduced by 10 feet until the end of its next turn. This does not affect creatures with immunity to cold damage.
3 charges
Recharges at dawn
DM Notes
Balance considerations: Cold resistance at uncommon is meaningful but not overpowered, as it is a single damage type and is bypassed by many higher-CR monsters. Frost Pulse's 3 charges and DC 13 Con save offer modest battlefield control — at level 6–8, reducing a single creature's speed by 10 ft is situationally useful but not dominant. The arcane focus integration is purely a quality-of-life benefit for spellcasters who wear medium armor (Artificers especially), removing the awkward two-handed spellcasting problem without granting any numeric advantage. DMs should note that Frost Pulse's 10-foot radius affects allies as well, so positioning matters. If the party lacks cold-resistant allies, remind players to account for this. For Artificers specifically, the arcane focus feature is the headline benefit; for non-Artificer spellcasters in medium armor, both the focus and resistance may be equally valuable.
Generated with: Level 8 · Artificer · Armorer · Armor · Arcane focus · Mysterious · Ice / Cold · Uncommon · No curses