Orcish Evocator

FIREBALLING ORCISH EVOCATOR (In incursion, evocating is casting damage spells, conjuring is summoning spells, the Use Magic skill is crawl's Evocations.)

Go to Point Buy.

Str 10
Dex 10
Con 10
Int 18
Wis 18
Cha 4
Luc 15

-Choose orc, choose mage, choose whatever alignment you feel like, choose evocations.
-Choose the Feats Bind Spell and Empower Spell.
-Put two in concentration, two in Metamagic(LEVEL THIS UP as much as possible), one in spot/searching, rest in decipher script/use magic/alchemy.
-By the third level you want to choose the feat Transmute Spell.

The way this character works is you use multiple metamagic feats (by turning them on in the spell menu, it'll say the letter you need to press to turn it on for Force Bolt or Fireball) to throw extraordinarily deadly fireballs at mobs of enemies.
By the time you get fireball, you'll want Bind Spell (so your fireballs don't kill you,) Empower Spell (50% stronger fireballs), and Transmute Spell sometimes (so they do different elemental damage to things immune to fire) on Fireball in the spell menu. This char is harder to keep alive if you don't have access to minor drain early (that's true for any mage though).  Make sure to eat Cha-intrinsic-providing monsters or Major Drain them so you don't get Curse-instakilled, possibly.