Stoneskin

Obsolete: This article refers to an aspect of the game which has been removed. It is retained for historical reference only.

Stoneskin
Level	2
School¹	Earth
School²	Transmutation
Source(s)	Book of Geomancy Book of Transfigurations
Casting noise	2
Spell noise	0

Hardens the caster's skin. It has no effect on the undead or those under the effects of most types of transformation.

Stoneskin is a level 2 Earth Magic/Transmutations spell which temporarily makes the caster's skin hard as stone.

Useful Info

Stoneskin grants a temporary bonus to AC:

AC Bonus: 2 + (spell power/20)
Max: +7

This AC bonus stacks with Statue Form, but it can't be combined with Ozocubu's Armour. It does not work with most form spells; only Beastly Appendage, Blade Hands, and Statue Form work with Stoneskin. The undead (Ghouls, Mummies, Vampires below Full) can't use this spell.

Strategy

A weaker version of Ozocubu's Armour, without encumbrance restrictions, that doesn't melt against fire. If you can cast Stoneskin (but not Ozocubu's), it's generally worth using - either during exploration or at the start of every fight.

Note that Stoneskin will not notify you when its duration is almost over. Should you be in the middle of a pitched battle, consider casting it again when you have a spare turn to guarantee you maintain your AC bonus until the end of the fight.

History

Stoneskin was removed in 0.18.
Prior to 0.17, the effects of this spell were boosted while in Statue Form, using the formula 3 + ((11 * spell power)/100) (Max +14).
Prior to 0.15, this spell's AC bonus was dependent on your Earth Magic skill, not your spell power, using the following formula:

AC Bonus: 2 + (Earth Magic/5)
Max: +7 at 25 Earth Magic
w/ Statue Form: 3 + ((9 * Earth Magic)/20)
Max: +12 at 27 Earth Magic