This is 3E, not 3.5E:
Tarzog Darksnake: male fiendish orc sor8; Medium-sized Humanoid (orc, spirit); CR 9; HD 8d4+24 (48 hp); Init +2; Spd 30 ft; AC 15 (touch 12, flat-footed 13); Atk +4 melee (1d4, dagger); SA Spells, smite good 1/day (+8 dmg); SQ DR 5/+2, SR 16, fire, cold resistance 15; AL LE; SV Fort +7, Ref +6, Will +8; Str 11, Dex 14, Con 17, Int 8, Wis 13, Cha 16.
Skills and Feats: Concentration +17, Intimidate +8, Craft Wand, Skill Focus (Concentration), Spell Focus (Evocation).
Equipment: Dagger, +2 bracers of armour, +1 headband of natural armour, +2 ring of resistance, +2 amulet of Charisma, wand of magic missile (5th caster level, 25 charges), scroll of haste (6th caster level).
Spells Per Day (6/7/7/6/3, save DC = 13 + spell level, or 15 + spell level for Evocation spells): 0 — arcane mark, daze, dancing lights, detect magic, detect poison, mage hand, read magic, resistance; 1st — charm person, mage armour, magic missile, ray of enfeeblement, shield, true strike; 2nd — acid arrow, cat’s grace, see invisibility; 3rd — dispel magic, fireball; 4th — dimension door.
Powerup Results (cat’s grace, mage armour, shield, see invisibility): AC 26 (touch 18, flat-footed 21), Ref +8, Dex 18.
(note: I nerfed shield to give +4 AC and +2 Ref saves IMC)