Frost Thrall

School	Conjuration
Level	Master
Magicka Cost	1100
Casting	Fire and Forget
Delivery	Target Location
Effect	Summons a Frost Atronach permanently.
Duration	999 days
Perk	Master Conjuration (1)
Spell Tome	Spell Tome: Frost Thrall
Game/DLC	Skyrim

Frost Thrall is the Master version of Conjure Frost Atronach. It summons a Frost Atronach that stays with the caster until it is killed or banished. One cast gives a tough companion that follows the caster everywhere.

Frost Thrall is an end game spell. Phinis Gestor at the College of Winterhold sells the tome once the Conjuration Ritual Spell quest is done, and that quest opens when Conjuration reaches 90.

Spell Tome

Frost Thrall is learned by reading Spell Tome: Frost Thrall. Phinis Gestor sells the tome.

How It Plays

Frost Thrall is a Master ritual spell that needs both hands to cast. It takes time to charge, so it is best cast before a fight. Once summoned, the Frost Atronach follows the caster everywhere until it is killed or banished.

The thrall is a stronger version of the atronach from Conjure Frost Atronach. It has a large health pool and heals itself steadily between fights. It fights in melee and soaks up blows that would otherwise land on the caster.

The thrall is immune to frost and to paralysis, and it is weak to fire. Its great size is its main drawback. Many cave and house doorways are too narrow for it, and it can block a corridor so that nobody else can pass. Dwemer ruins, with their wide halls, suit it far better.

Destruction cloak spells harm a thrall that stands close to the caster. A conjurer with a thrall at their side should pick other Destruction spells.

Compared with the Other Thralls

Flame Thrall summons a permanent Flame Atronach that fights from range with fire. Storm Thrall summons a permanent Storm Atronach that fights from range with lightning. Frost Thrall is the melee tank of the three. Dead Thrall raises a dead person as a permanent servant instead of an atronach.

Perks and Builds

The Master Conjuration perk halves the large magicka cost of the spell. Elemental Potency summons a stronger thrall. With Twin Souls, the caster can keep two thralls at once, such as a Frost Thrall in front and a Flame Thrall behind.

Fortify Conjuration gear can bring the cost down a great deal. The Secret of Arcana power from the Dragonborn DLC makes spells free for 30 seconds, which lets a character without enough magicka still cast the thrall.

Strengths and Risks

The spell lasts 999 days, which in practice means the thrall stays until it dies. The Frost Thrall carries a cloak of cold that drains the health and stamina of every enemy who fights it up close. Warriors that trade blows with it tire quickly.

It is the only one of the three thralls that walks rather than floats. It cannot cross water on the surface, but it can breathe underwater and follow the caster through deep water.

Dragon priests can seize summoned atronachs with Command Daedra, and a thrall is no exception. A Spell Absorption effect such as the Atronach Stone can also swallow the summoning itself, so the cast fails.

Gameplay Tips

The Elemental Potency perk summons a stronger thrall.
Frost spells leave the thrall unharmed, so Blizzard and Frost Cloak are safe to use beside it.

Spell Categories

All Conjuration Spells

Novice

Novice spells are the first a mage learns and cost the least magicka.

Name	Cost	Casting	Effect
Bound Sword	93	Fire and Forget	Creates a magic sword for 120 seconds. Sheathe it to dispel.
Conjure Familiar	107	Fire and Forget	Summons a Familiar for 60 seconds wherever the caster is pointing.
Raise Zombie	103	Fire and Forget	Reanimate a weak dead body to fight for you for 60 seconds.
Bound Dagger	53	Fire and Forget	Creates a magic dagger for 120 seconds. Sheathe it to dispel.
Conjure Skeleton Minion	106	Fire and Forget	Summons a weak Skeleton warrior for 60 seconds.
Conjure Undying Ghost	All available magicka	Fire and Forget	Consumes all magicka and summons an Undying Ghost for 60 seconds. The ghost's attributes are equal to twice the amount of magicka consumed (up to 600).
Conjure Zombie	107	Fire and Forget	Summons a Zombie for 60 seconds wherever the caster is pointing.

Apprentice

Apprentice spells need a little practice in the school.

Name	Cost	Casting	Effect
Bound Battleaxe	169	Fire and Forget	Creates a magic battle axe for 120 seconds. Sheathe it to dispel.
Conjure Flame Atronach	150	Fire and Forget	Summons a Flame Atronach for 60 seconds wherever the caster is pointing.
Flaming Familiar	57	Fire and Forget	Summons a flaming familiar which will charge into battle and explode.
Reanimate Corpse	144	Fire and Forget	Reanimate a more powerful dead body to fight for you for 60 seconds.
Soul Trap	107	Fire and Forget	If target dies within 60 seconds, fills a soul gem.
Conjure Boneman	129	Fire and Forget	Summons a Boneman Archer from the Soul Cairn for 60 seconds wherever the caster is pointing.
Summon Arvak	136	Fire and Forget	Summons Arvak in the Soul Cairn or Tamriel wilderness to act as your steed.
Conjure Foul Zombie	75	Fire and Forget	Summons a Foul Zombie for 60 seconds wherever the caster is pointing.
Conjure Haunting Spirit	128	Fire and Forget	Summons a Haunting Spirit for 60 seconds. When killed, the spirit steals 10 points from the skills of its killer and transfers them to the caster for a short time.
Conjure Skeleton Marksman	132	Fire and Forget	Summons a Skeleton Marksman whose arrows weaken foes for 60 seconds.
Soul Split	96	Fire and Forget	Sacrifice a friendly conjured or reanimated minion to summon 2 Sundered Shades for 60 seconds.
Summon Daedric Horse	136	Fire and Forget	Summons a Daedric Horse to act as your steed.

Adept

Adept spells are the middle rank and hit noticeably harder.

Name	Cost	Casting	Effect
Banish Daedra	196	Fire and Forget	Weaker summoned daedra are sent back to Oblivion.
Bound Bow	207	Fire and Forget	Creates a magic bow and 100 magic arrows for 120 seconds. Sheathe it to dispel.
Conjure Frost Atronach	215	Fire and Forget	Summons a Frost Atronach for 60 seconds wherever the caster is pointing.
Revenant	183	Fire and Forget	Reanimate a powerful dead body to fight for you for 60 seconds.
Conjure Mistman	193	Fire and Forget	Summons a Mistman from the Soul Cairn for 60 seconds wherever the caster is pointing.
Conjure Ash Spawn	186	Fire and Forget	Summons an Ash Spawn for 60 seconds wherever the caster is pointing.
Conjure Seeker	157	Fire and Forget	Summons a Seeker for 60 seconds wherever the caster is pointing.
Banish Undead	176	Fire and Forget	Summoned or raised undead up to level 15 are sent back to the grave.
Conjure Dark Seducer Archer	75	Fire and Forget	Summons a Dark Seducer Archer for 60 seconds wherever the caster is pointing.
Conjure Dark Seducer Warrior	75	Fire and Forget	Summons a Dark Seducer Warrior for 60 seconds wherever the caster is pointing.
Conjure Golden Saint Archer	75	Fire and Forget	Summons a Golden Saint Archer for 60 seconds wherever the caster is pointing.
Conjure Golden Saint Warrior	75	Fire and Forget	Summons a Golden Saint Warrior for 60 seconds wherever the caster is pointing.
Conjure Putrid Zombie	107	Fire and Forget	Summons a Zombie for 60 seconds wherever the caster is pointing.
Conjure Skeleton Champion	192	Fire and Forget	Summons a Skeleton Champion that gains +10% attack damage for each nearby enemy (up to 5) for 60 seconds.
Conjure Tomb Guardian	192	Fire and Forget	Summons a Tomb Guardian for 60 seconds that conjures a Shade when it kills an enemy.
Necromancer's Ritual	123	Fire and Forget	Regain 30 health and magicka every time a friendly conjured or reanimated minion dies for 120 seconds.

Expert

Expert spells are powerful and expensive to cast.

Name	Cost	Casting	Effect
Command Daedra	243	Fire and Forget	Powerful summoned and raised creatures are put under your control.
Conjure Dremora Lord	358	Fire and Forget	Summons a Dremora Lord for 60 seconds.
Conjure Storm Atronach	322	Fire and Forget	Summons a Storm Atronach for 60 seconds wherever the caster is pointing.
Dread Zombie	302	Fire and Forget	Reanimate a very powerful dead body to fight for you for 60 seconds.
Expel Daedra	215	Fire and Forget	Powerful summoned daedra creatures are sent back to Oblivion.
Conjure Wrathman	301	Fire and Forget	Summons a Wrathman from the Soul Cairn for 60 seconds wherever the caster is pointing.
Conjure Ash Guardian	340	Fire and Forget	Creates an Ash Guardian that guards that location until destroyed. Consumes a Heart stone from your inventory, without which it will be hostile.
Conjure Ayleid Lich	358	Fire and Forget	Summons an Ayleid Lich for 60 seconds.
Conjure Cursed Spectre	258	Fire and Forget	Summons a Cursed Spectre for 60 seconds that drains health and magicka from enemies.
Conjure Malignant Zombie	161	Fire and Forget	Summons a Malignant Zombie for 60 seconds wherever the caster is pointing.
Conjure Skeleton Warlock	258	Fire and Forget	Summons a Skeleton Warlock that wields powerful shock magic for 60 seconds.
Pride of Hirstaang	287	Fire and Forget	Summons a Bear for 60 seconds wherever the caster is pointing. Resist 50% of frost damage for 60 seconds. Health regenerates 50% faster for 60 seconds.

Master

Master spells are the strongest in the school and need the most skill.

Name	Cost	Casting	Effect
Dead Thrall	1000	Fire and Forget	Reanimate a dead body permanently to fight for you. Only works on people.
Flame Thrall	900	Fire and Forget	Summons a Flame Atronach permanently.
Frost Thrall	1100	Fire and Forget	Summons a Frost Atronach permanently.
Storm Thrall	1200	Fire and Forget	Summons a Storm Atronach permanently.
Conjure Ancient Deathpriest	1004	Fire and Forget	Summons an Ancient Deathpriest that wields powerful magic and commands the undead for 60 seconds. When killed, the Deathpriest splits into 3 Tortured Shades.
Conjure Bone Colossus	1004	Fire and Forget	Summons a Bone Colossus for 60 seconds. While active, conjured skeletons regenerate health and you can summon 2 additional skeletons. Only 1 colossus can be summoned at a time.
Conjure Staada	75	Fire and Forget	Summons Staada for 60 seconds wherever the caster is pointing.