Ars Magica Digital Codex

Lava

Molten lava has a base damage of +15. This is the level of damage sustained if a character walks on lava or is splashed by lava. If a character has a limb or more of their body covered by lava, it causes +30 damage. If half or more of his body is covered by lava, then the character suffers +45 damage. Finally, if his entire body is immersed in lava, he suffers +60 damage. The character continues to suffer this damage each round, until he has been removed from the lava. As lava may stick to the character, it may be difficult to naturally remove the lava from a character who has been immersed in a pool of lava. Note that, apart from defining the base damage for molten lava, these rules are not new; they follow the standard rules for heat and corrosion damage on ArM5, page 181.

Bonuses to the character's Soak score from any armor he is wearing only apply if the character has less than half of his body covered by the lava. This is because, although the armor provides some protection from splash damage, the lava can flow through and behind the character's armor once he is substantially covered. Bonuses to Soak from Virtues such as Tough, and the natural hide of some characters (such as Bjornaer magi in Heartbeast form), cannot be bypassed in this way. Most magi will also have a bonus to their Soak from their Ignem Form Score (see ArM5, page 78), which cannot be bypassed either.