As a reaction, which you use when you are hit by an attack or missed by 4 or less that you can see or when you take fire damage, you can create a block of ice around you. Roll a d4 and add the result to your Defense until the start of your next turn, including against the triggering attack. You can do so after the roll but before any effects of the roll occur.
Additionally, you have resistance to fire damage until the start of your next turn.
You can expend 1 additional mana to trigger the spell when a creature that you can see within 10 meters is attacked. The attacked creature gains the benefits instead.
Ice Shelter. You can expend 2 additional mana to instead become encased in ice as the damage against you is halved. For 1 minute/mana or until you end this feature on your turn, a non magical dome of solid ice forms around you. The dome forms up to 30 centimeters away from your body in all directions and is 30 centimeters thick.
The dome is an object made of ice that can be damaged and thus breached. It has 12 Defense, 2 Soak, 30 Health, and it is vulnerable to fire damage. Reducing the dome to 0 health destroys it.