The Atronach Stone (Skyrim)

The Atronach Stone is a standing stone in .
==Effect==
The Atronach Stone fortifies magicka by 50 points and grants 50% spell absorption. However, it also causes magicka regeneration to decrease by 50%.
==Location==
The stone is located in the volcanic tundra between Windhelm and Riften, just outside the mountain range between the two locations. The stone is by the river southeast of Eldergleam Sanctuary and a short distance east of Darkwater Crossing.
==Strategy==
There are several ways in which the impact of the 50% reduced magicka regeneration from the Atronach stone can be reduced or even eliminated. Magicka regeneration may be increased through enchanted equipment or potions. Looted or purchased equipment of magicka regeneration can provide increases of up to 100% for rings, amulets, and helmets, and 150% for robes. Such items may be disenchanted to enable the player to enchant their own equipment, ordinarily by up to 60%. Potions of regenerate magicka provide increases of between 50% and 100% for 300 seconds. The Recovery perks increase magicka regeneration by up to 50%. As all effects are additive, magicka regeneration can be increased by up to 600% (or 550% with the Atronach stone reduction), which is far in excess of what is useful in ordinary combat, effectively eliminating the disadvantage from the Atronach stone. Such strategies however, come at the cost of equipment slots, purchasing of perks, or use of potions, so the disadvantage of the Atronach stone will always remain, although this may become irrelevant to high level characters depending on their build.
The benefits of the Atronach stone are also considerable. When combined with the Magic Resistance and the Atronach perks from Alteration and the Elemental Protection perk from Block, it is possible to build a character that is highly resilient to magic. These advantages are more prominent on races with a greater magical aptitude. As an example, the Bretons, who possess the Dragonskin power, can stack this with the Atronach Stone, making the player immune to magic for the duration of Dragonskin. As for an Altmer, the player can counter the reduced magicka regeneration by engaging their Highborn power or by using equipment with the Regenerate Magicka enchantment, such as the Morokei mask. It is also possible to possess 170 points of extra magicka for the Altmer if they elect to use this stone, owing to their initial magicka pool being higher than other races, combined with the Miraak mask. The Nahkriin mask will also provide extra magicka, although Miraak's mask gives a larger reserve should the player character be over level 60 when the latter is unlocked. 
See the Spell Absorption page for more information on obtaining 100% spell absorption.
Also given the way the magic regeneration system works, with the more magicka a character has, the more they gain per second. So with a 50% reduction to magic regeneration, the two ways to counteract this effect is to either get another 50% regeneration effect or double the magicka capacity.
For another, slightly unorthodox, strategy, this stone can be used by a pure combat character who does not use spells. The slight stunt in magicka regeneration is rendered irrelevant, while gaining powerful Spell Absorption. The magicka boost, however, is similarly disregarded.
==Bugs==
Click to see the list of bugs encountered
* The stone's active effect treats summoning as a spell being cast on yourself, thus the 50% spell absorption chance kicks in making summons 50% likely to not occur.
** When a summoning spell gets negated the player will "absorb" the magicka, this can be used to restore a low magicka level. However, since 50% of the time the spell still works normally, it can take a few tries and you also must have enough magicka to actually perform the spell.
*** When using the Dragon Shout Summon Durnehviir, should it fail the player will regenerate all their magicka, due to the game treating the Shout as a Conjuration Spell.
* The 'absorb' animation used for showing that an enemy's spell is being absorbed can also play incorrectly for non-magical attacks. This has been observed with everything from non-enchanted swords to a wolf's bite. The reason this occurs is because wolf/bear attacks have a chance to inflict a disease such as Rockjoint, so their attacks have a magical component (each time the animal attacks it casts a spell on you with a small chance to inflict a disease). Thus, the Atronach Stone reduces the chance for you to receive a disease from these animals by 50%.
*In some instances, the 50% spell absorption also interferes with the Elemental Wall spells (Flames, Frost, and Storms). When casting the Wall spell, the wall appears sporadically, and often not at all.
*The spell absorption effect may cause problems during Brelyna's Practice. In the quest a spell is cast on the Dragonborn, however if the spell is absorbed then the quest will not progress any further.
*A potential solution for the spell absorption interference is to place the Atronach Stone on the Aetherial Crown, so that the Stone's effects can be equipped and unequipped as needed.
==Appearances==
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de:Der Atronachenstein
es:La piedra del atronach
pl:Kamień Atronacha (Skyrim)
ru:Камень Атронаха (Skyrim)
Category:Skyrim: Eastmarch Hold Locations
Category:Skyrim: Abilities