I've spent the past couple days designing a Half-orc Magus build.
The image I'm going for is basically a mix between the Grim Reaper and General Kael from Willow.
He's a scythe wielding, trip-focused 20 point build. At level 10, he can easily get a trip bonus of +29, at level 15: +35, at level 20: +42. Not even assuming any particular magic items are available.
Point of interest:
Half-orc Favored Class benefit: 1/2 point of bonus damage to fire spells
Alternative Racial Trait: Sacred Tattoo instead of Ferocity
Traits: Anatomist, Killer
Feat progression: Combat expertise, Improved Trip, Weapon Focus (scythe), Combat Casting, Combat Reflexes, Greater Trip, Weapon Specialization (scythe), Dodge, Vital Strike, Mobility, Spring Attack, Whirlwind Attack, Greater Weapon Focus
Arcana progression: Close Range, Maneuver Mastery (Trip), Arcane Accuracy, Maximized Magic, Quickened Magic, Critical Strike
Selected Buff Spells: Enlarge Person, Bull's Strength, Transformation
Selected Attack Spells: Scorching Ray, Vampiric Touch, Phantasmal Killer, Corrosive Consumption, Geyser, Contagious Flame, Sirocco
Selected Battlefield Control Spells: Grease, Silent Image, Major Image, Black Tentacles, Wall of Fire, Wall of Force, Acid Fog
Fluff: He likes to use his versatile abilities of tripping, fighting, debuffing, tricking, and herding the enemy before burning them with powerful fire spells. He gains great pleasure in ruining his enemies and seeing them flee before him. His fervor for horror on the battlefield will earn him a terrible reputation throughout the course of his career.