You can reassign with the console, it’s a bit of a nutkicker though.
Bleed, you know there’s the doublefist perk for destruction right? A doublefisted spell with the perk seems to do base damage + 25 to 50% more damage and guarantees stagger if you have the stagger perk. So that’d be like 250 - 300 from a single dual cast of a high level bolt spell like Thunder or Incinerate, not affected by armor as far as I can tell.
Most things die from a single dualcast incin. Stronger enemies take two. Bosses take 4-5. Dualcast incin with my gear costs like 30-40mp. And I have crappy enchanting because I didn’t figure it out til much too late in the game, so my gear ain’t great. With incin in particular they take loads of damage, are frozen for a couple seconds and are on fire. Being on fire causes them to take damage over time and causes your next fire spell to do even more damage. With dualcast Thunderbolt on a mage, they’re staggered (cancels current spell) and lose ~150-200 mana, which is usually 1/3rd to 1/2 of their mana bar if not more. Given that they’ve also shot off a couple spells, a single dualcast Thunderbolt is generally enough to blap their mana or just out and out vaporize them. And most mages generally cannot sustain that kind of firepower hitting their ward spell. With the disintegrate perk, they seem to autodie if they hit ~20% of health, so there’s a potential for even more damage in there. And don’t forget frost. With the relevant perk they are paralyzed at ~20%, and every cast slows them significantly, eats stamina and staggers if dual cast. Use it on a warrior type npc and they will never get close enough to hit, let alone power attack you.
Seriously, destruction can output some fucking retarded numbers and has some amazing side effects with the right perks. I ignored the fire one that causes flee at low HP, because that shit is annoying. With good gear those numbers can be output at an obscenely frequent rate. You might think fireball is fairly weak, but a spell dual cast for less than 20 mana (at my current level and gear) that hits for ~110-150 in a huge aoe will kill most enemies in just a few dual casts. And staggers them too. I can shit fireballs out erryday all day without noticing and never take damage as a result. There are some mass battle quests, and I was blapping a dozen or more dudes simultaneously. Doubt even a 2h warrior could come close to doing that.
Mad powerful school. I speed run through most dungeons, and blap bosses like nobody’s business because the single target damage, though not as good as what a weapon can put out, is high enough and frequent enough and cheap enough that it can be maintained. I carry a glass dagger for flavor and the occasional assassination, but I find that actually using a weapon lowers my damage output too much to be worth doing. And I have a sick enchanted glass sword I got as a quest reward (not to mention several daedric prince weapons that are similarly powerful) and fairly decent 1h skill (you stab enough people for the Brotherhood, it goes up quick).
And that’s ignoring the ability to do stuff like summon a frost atronach and spam ice storm without affecting it, or a fire atronach and firebombing the area, or creating a dead zone with wall of X and runes. I’ve yet to see an enemy that can survive running through a door blocked by a triple wall of fire/ice/lightning.
I don’t get why people think it isn’t all that strong. At level 40, I feel it’s broken overpowered for the ease with which it can smite a boss while simultaneously annihilating his companions. At low levels? Definitely weak. I spent most of my time fleeing and hoping my atronach and companion would hold an enemy at bay, and getting instagibbed. But at high levels, zomgzorz. And if you know which races are strong/weak vs what elemental damage types, it gets even more absurd. Don’t hit a dunmer with fire, hit em with ice. Hit nords with fire. Hit vampires with fire. Hit dragons with the opposed type for their breath attack or zing. Don’t hit critters with the word ice/snow in front of their name with ice spells (snow bear, ice wolves, whatev).