Ymir Runestone

Monsters struck by a melee (not missile or spell) attack under the influence of this rune lose 10 points of their Fire Resistance per hit. E.g., if the monster originally had Fire Resistance 15, after being affected by this rune once it would only have Fire Resistance 5. After being affected by this rune a second time, its Fire Resistance would drop to zero. (There is no such thing as negative damage Resistance.)

The monster’s reduced Fire Resistance applies to attacks by anyone, not just the user of this rune. However, the monster’s Fire Resistance isn’t lowered until a user of this runestone deals melee damage to the monster.

Monsters completely immune to Fire are unaffected by this item. (Immunity is not the same as Resistance)

Runestones are single use items that are turned in to the coach prior to starting an adventure. The effects are added to your overall stats. One runestone may be used per adventure.