From an early age, all Barakas could think off was fire. As he grew and started training, he was always (and still is) torn between the blade and the magic, but he always stayed true to his first passion - Fire
At 11th level
Tiefling male
Str 13, Con 16, Dex 12, Int 21, Wis 9, Cha 18
Hit points: 86
Healing Surges: 10
AC: 28, Fortitude 21; Reflex 23; Will 24
Skills: Arcana, Endurance, Athletics
Class Features: Hybrid Swordmage Aegis of Shielding, Cantrips
Feats: Intelligent Blademaster, Toughness, Leather Armor Prof, Hellfire Blood, Surging Flame, Ferocious Rebuke, Hybrid Talent (Swordmage Warding)
At-Will: Greenblade Flame (1), Scorching Burst (1)
Encounter: Burning Hands (1), Incendiary Sword (3), Fire Burst (7), Bolts of Bedevilment (11)
Daily: Flaming Sphere (1), Swordmage Shielding Fire (5), Wall of Fire (9)
Utility: Shield (2), Armathor's Step (6), Blur (10)
Paragon Path: Turathi Highborn
Flaming Longsword +2 (lvl 10), Leather Armor +3 (lvl 11), Cloak of Resistance +3 (lvl 12)
Overall, looks playable, and it could be fun! Even though I like 4e multi-classing, hybrid classes do have that old-school feel.