Alabaster Casket

An earth-aspected Casket of Firedust Conversion inlaid with shining white jade in geometric patterns resembling mountains, that turns firedust into stonedust.

Without mote

A firewand with stonedust in it fires a cascade of crystal shards. These inflict base 8 dice of lethal damage. In addition, the shards stick in anyone they hit, forcing the target to immediately make a Stamina + Resistance roll, difficulty 3. If she fails, she immediately loses one dot of Dexterity until the end of the scene, as a slow paralysis seeps out from the shards and grips her limbs. This Dexterity loss stacks with multiple uses, and a target reduced to 0 Dexterity is fully paralyzed and can take no actions until the scene ends, although she can still speak (albeit in a slurred and inefficient fashion) and move her eyes, etc.

With mote

The crystal shards are magically hard and sharp, inflicting base 12 dice of lethal damage. The target, if hit, immediately makes a Stamina + Resistance roll, difficulty 3, and if she fails, she is paralyzed: her skin takes on a greyish, granite-y sort of cast, and she cannot take any actions, speak or otherwise move a single muscle until the end of the scene.