What you describe is most likely a Mythic Companion filling your magus slot in a campaign: so you play one instead of a magus.
A Nephilim character from RoP:D p.66 can be built to come close to your description. Since you do not have this book, I attach example stats for one:
Zaimph
Divine Might: 4 (Corpus)
Characteristics: Int +2 (Shrewd), Per +1 (Attentive), Pre +1 (Beautiful), Com 0, Str +4 (Hearty), Sta +4 (Tenacious), Dex +1 (Deft), Qik +1 (Quick Reflexes)
Size: +1
Age: 80 (80), Height: 216 cm, Weight: 155 kg, Gender: Female
Decrepitude: 0
Warping Score: 0 (0)
Confidence: 1 (3)
Virtues and Flaws: Nephilim, Greater Immunity (Disease), Blood of the Nephilim [Advancement Modifier: 0], Affinity with Single Weapon, Improved Characteristics (×4), Inspirational (Bonus: +3 to targets' Personality Traits), Strong Willed (Will Rolls: +3), Tough (Soak: +3), Great Stamina × 1, Great Strength × 1, Arcane Lore (50/50), Educated (Hebrew) (50/50), Sense Holiness and Unholiness, Strong Angelic Heritage (30/30) [Totals: 30/30], Increasing Size: +1, Compassionate, Greedy, Tzadik Nistar, Dhimmi, Offensive to Demons (Penalty: 3 to social interactions with Demons), Visions
Personality Traits: Brave +2, Compassionate +3, Greedy +3, Just +2, Proud of her Abilities +1
Combat:
Dodge: Init: +1, Attack , Defense +6, Damage
Fist: Init: +1, Attack +6, Defense +6, Damage +4
Kick: Init: +0, Attack +6, Defense +5, Damage +7
Cloak: Init: +1, Attack +7, Defense +8, Damage +3
Dagger: Init: +1, Attack +8, Defense +6, Damage +7
Sword, Long & Shield, Heater: Init: +3, Attack +15, Defense +15, Damage +10
Javelin: Init: +1, Attack +9, Defense +7, Damage +9
Soak: +15
Fatigue levels: OK, 0, 1, 3, 5, Unconscious
Wound Penalties: 1 (1-6), 3 (7-12), 5 (13-18), Incapacitated (19-24), Dead (25+)
Abilities: Art of Memory 3 (Scripture), Rabbinic Law 1 (Angels), Theology 1 (Bible), Theology, Jewish 1 (Torah), Hebrew 5 (Biblical), Artes Liberales 3 (Grammar), Penetration 5, Dominion Lore 4 (Angels), Infernal Lore 4 (Demons), Magic Lore 4 (Regios), Canaan Lore 1 (Water Holes), Chirurgy 1 (Bind Wounds), Judaic Lore 3 (Communities), Stealth 3 (Natural Areas), Awareness 5 (Alertness), Survival 3 (Desert), Athletics 3 (Jumping), Brawl 5 (Cloak), Climb 3 (Rock), Swim 3 (Rough Water), Lingua Franca 5 (Trade), Arabic 5 (Urban), Aramaic 5 (Galilean), Leadership 5 (Inspiration), Charm 1 (Empathy), Folk Ken 3 (Lies), Single Weapon 9 (Sword, Long), Thrown Weapon 5 (Javelin), Sense Holiness and Unholiness 5 (Demons)
Equipment: Full Mail and Open Helmet (Soak: 15) (Soak: 15; Protection: 8 ); Shield, Heater (Init: 0; Atk: 0; Dfn: +3; Str: 0; Cost: Standard)
Encumbrance: 0 (3)
Powers:
Halo (Divine: 10), Points: 1, Initiative: Qik 1, Form: Ignem, Range: Touch, +1, Duration: Conc, +1, Target: Ind, +0, Level: CrIg10, Design: 10 levels, Base 4, +1 Touch, +1 Conc
The Lord's Terrifying Herald (Divine: 10), Points: 1, Initiative: Qik 1, Form: Auram, Range: Voice, +2, Duration: Mom, +0, Target: Ind, +0, Level: CrAu10, Design: 10 levels, Base 4, +2 Voice
Admonish the Ferocious Animal (Divine: 5), Points: 1, Initiative: Qik+0, Form: Animal, Range: Touch, +1, Duration: Ring, +2, Target: Circle, +0, Level: ReAn5, Design: 5 levels, Base 2, +1 Touch, +2 Ring
Curse the Sinful Foe (Divine: 5), Points: 1, Initiative: Qik+0, Form: Corpus, Range: Voice, +2, Duration: Conc, +1, Target: Ind, +0, Level: ReCo5, Design: 5 levels, Base 2, +2 Voice, +1 Conc
Vis: Vis: 1 Pawn of Corpus (In Body);
Playing one without RoP:D both in player and storyguide hand is quite impossible - so you best try to get it, if necessary as a .pdf : atlas-games.com/product_tables/AG0278.php
Cheers