[quote=TentacleLord]
Hmmm. I'll take a look into it, and more specifically, lore-wise, why'd he suddenly gain a horse and learn dark magic?
[/quote]

Grandmasters (in this canon) can use all forms of magic. From the OP:

 Grandmaster (Sword, Anima, Light, Dark) [Ability to Learn a new class] Brings strategy and able to Rally allies when on the field of battle