While we're talking Crawl though. I'm currently playing a Demigod Conjurer and I've found a lot of books. Wondering what people are recommending I go for in terms of spells. I usually die before I get this sort of spell selection. I have access to the following books:
Book of Conjurations: Magic Dart, Searing Ray, Dazzling Spray, Fulminant Prism, Iskenderun's Mystic Blast, Iskenderun's Battlesphere
Book of the Dragon: Flight, Cause Fear, Bolt of Fire, Dragon Form, Dragon's Call
Book of Burglary: Swiftness, Passwall, Passage of Golubria, Lee's Rapid Deconstruction, Invisibility, Darkness
Book of Fire: Ignite Poison, Fireball, Bolt of Fire, Delayed Fireball, Ring of Flames
Book of Power: Fulminant Prism, Iskenderun's Mystic Blast, Venom Bolt, Bolt of Magma, Iron Shot, Orb of Destruction, Spellforged Servitor
Any recommendations from the more experienced players would be appreciated! I'm not sure what is good to spend my spell slots on here. More damage? Escape-y things? Summons?
Bolt of Fire is my very favorite bread-and-butter attack spell. It has good range, does way more damage than Fireball, and not much resists it. For fire-resistant monster, you'll eventually want something irresistable. Orb of Destruction is a great choice, when your Conjurations gets high enough. The aiming takes some getting used to, but it deals impressive damage. Iron Shot is also fine. Bolt of Magma is... tolerable; I was never impressed with its range or damage.
Don't train any skill based on a spell you might find later. If you find Haste, you can turn off everything but Charms and cast it soon enough.
Having a melee backup weapon is a good idea. In the absence of a compelling find, I think either a quarterstaff or morningstar is a good choice. Staves/lajatangs are probably the best damage/XP payoff for someone who doesn't intend to go to 20 in the weapon skill. Maces give you the option to do DWhip/buckler if you find the DWhip, or morningstar/buckler, or great mace. Finding a nice great mace is usually easy in Vaults.
You seem to be a little hung up on the idea of a randart weapon? I don't think most characters, melee or non, will end up with an artifact weapon. It's a nice surprise when you do find something that's as good as a well-branded, +9 weapon in your skill of choice.