So we all have those few spells we never use, or rarely use them. Whether it's them being useless or just not being as common around here or whatever reasons. What Spells do you rarely use in Skyrim?
For me it'd be
Destruction: Whirlwind Cloak and Fire Storm
Restoration: Turn Undead
Illusion: Courage and Fear
Conjuration: Conjuration No.1 (in other words I use them all...)
Alteration: Paralyze (Yep rarely use that spell line, especially mass Paralysis)
So that's my list, what are yours?
Destruction: Wall spells, Runes, anything that isn't fire magic (my fire damage output is glitched so that I do more damage with fire without Augmented Flames)
Restoration: Turn Undead, Poison Rune, anti-vampire spells (Sunfire, Vampire's Bane, Stendarr's Aura, though this is because I keep joining vampires instead of Dawnguard)
Conjuration: Bound Weapons (Unless I'm not a mage because then I'd get Mystic Binding and be done with it), Necromancy (can't find a good corpse for Dead Thrall)
Alteration: Light spells, telekinesis
Illusion: Courage, Fear, Calm, Invisibility
Shouts: Pretty much all of them (Except for Dragon Aspect, MFD, and Soul Tear)
Alteration - Ash Rune, Equilibrium, Waterbreathing (I use dragon mask Volsung instead), Telekinesis
Conjuration - Summon Familiar, Flaming Familiar
Destruction - Incinerate (Ignite is more powerful), Wall Spells (Miraak's Staff is more powerful), Runes
Illusion - Clairvoyance
Restoration - Sun Fire
In all of my playing, these would be least used I think:
Destruction: Expert level projectile spells. I use the walls a lot but the projectiles at this level are just a bit out of reach to be mana conservative without enchanting and heavy magicka investment.
Restoration: I would have to say the protection spells and turn undead. These are reserved for all of my paladin type characters and usually only those types.
Illusion: Clairvoyance. Such a cool spell and I tried using it on a no HUD character which was fun but old habits made me drop the spell and bring up the info I needed desperately.
Conjuration: Probably the banish spells. I usually use enchantments or bound weapons for this effect.
Alteration: I use this school the most, so it is hard to say. I might have to boil it down to paralyze as it is a costly OP effect OR equilibrium. I like the idea of trading health for magicka but I usually don't go through the trouble of favoriting this spell and actually using it within a playthrough. Telekinesis is also a rare use for me.
Illusion: The Courage/Rally type spells for buffing friends. I cast alone.
Conjuration: Conjure Familiar. Completely useless summon. Flaming Familiar's are more useful for the simple reason they die in an explosion. I never use Bound Dagger or Battleaxe either. Just not useful.
Destruction: I don't use too many Cloak spells. I generally don't use any of the lower spells once I get Expert except Fireball and Ice Storm.
Restoration: All of it. Almost never use these. Never even learned the higher spells.
Alteration: Skin spells and Equilibrium.
Illusion: every spell other than Courage/Rally/Call to Arms and Clairvoyance. I find most of the Illusion tree is only useful to thieves or pacifist characters. Sometimes I use them, though.
Conjuration: Banish daedra spells, and I don't think I've ever cast Conjure Seeker before. I also rarely raise the dead. Also Bound Dagger, that spell is useless.
Alteration: Waterbreathing. I use enchantments for this, though it is useful for leveling if you need quick skill gains. Also Equilibrium is something I hardly ever use.
Destruction: Vampire drain? I use most of the Destruction spells consistently, except maybe the master spells.
Restoration: The undead versions of the Heal Other spells. Because I hardly ever reanimate corpses, these are almost never used.
Destruction: Whirlwind Cloak and any "Rune" spells. Never use either.
Illusion: Muffle and Invisibility. Never use either.
Restoration: Turn Undead and any "Ward" spell. Never use either of these.
Conjuration: Any of the Elemental Atronach's. I never use them.
Alteration: The Paralyze spell line. I never use Paralyze or Mass Paralysis. I use only the "Ash Shell" and "Flesh" spells. No Telekinesis, No "Transmute" and rarely I use "Equilibrium."
I'm not sure about wether or not they are too powerful (the fact that you can cast them even when the victim has already been under it's effect is quite overpowered, but on the other hand you have the level cap). What I do know is that I never use them when playing a morally good character, these spells just feel utterly evil.