Thanks for the input people.
Specially thanks Sollir, that's what I was searching for.
Ogre Mage Ftr 2; Large Giant ; CR 9; HD 5d8+20 plus 2d10+8; hp 61;
Init +5; Spd 40 ft., fly 40 ft. (good); Space/Reach 10 ft./10 ft.; AC 19 (+1 Dex, -1 size, +5 natural, +4 chain shirt), touch 9, flat-footed 18;
Base Atk +5; Grp +14; Atk Greatsword +11 melee (3d6+10/19-20) or longbow +5 ranged (2d6/x3);
SA Spell-like abilities; SQ Darkvision 90 ft., low-light vision, regeneration 5, spell resistance 20; AL Usually lawful evil; SV Fort +12, Ref +2, Will +4;
Str 24, Dex 12, Con 19, Int 14, Wis 12, Cha 22
Skills: Concentration +14 (+18 Casting Defensively), Listen +10, Spellcraft +10, Spot +10
Feats: Combat Expertise, Combat Casting, Improved Initiative, Iron Will, [Feat]
Spell-Like Abilities: At will-darkness, invisibility; 1/day- charm person (DC 17), cone of cold (DC 21), gaseous form, polymorph, sleep (DC 17). Caster level 9th. The save DCs are Charisma-based.
Flight(Su): An ogre mage can cease or resume flight as a free action. While using gaseous form it can fly at its normal speed and has perfect maneuverability.
Regeneration(Ex): Fire and acid deal normal damage to an ogre mage. An ogre mage that loses a limb or body part can reattach it by holding the severed member to the stump. Reattachment takes 1 minute. If the head or some other vital organ is severed, it must be reattached within 10 minutes or the creature dies. An ogre mage cannot regrow lost body parts.
Sorry about the formatting, I'll fix it eventually