Artificer - Cryogenics

Embracing the cold at the cutting edge of the scientific study, cryogenics artificers use the cold to preserve their allies and freeze their enemies solid. They have mastered the use of cold to slow a creatures metaballic rate to achieve any desired effect.

Mechanically you gain a cold gun and list a of spells that can be cast using the gun rather than your spell slots. At later levels you can extend the time before a creature cannot be revived, deal more cold damage and slow your foes, and finally you project an aura of cold freezing foes that get to close.

- from the publisher's blurb