Specializations: Arcane Warrior, Blood Mage

Stats (in order): 10, 20, 20, 45, 14, 25

Skills: Kinda unimportant, but I went with herbalism and the combat lines

Spells: all of the mage, blood mage, and arcane warrior lines, fireball, stone fist, spell wisp, death magic, miasma, cone of cold, and death hex (with all of the prerequisite spells for these)

Equipment: starfang (with grandmaster fire, frost and undead runes), blood dragon armor (except the helm), bergen's honor, earthhart bulwark, buckle of the winds, spellward, wicked oath, morrigan's ring

You'll have to find a couple stat tomes, and five or so arcane tomes to get the same results, but he's nigh on undamageable, dishes out enormous amounts of damage (175 is my max for a single sword swing), and rocks magic better than any mage.