Well, using the combinations that you gave me, I'll make you examples of Artes that
could be used. These are just ideas, but you can use/customize them if you wish!
Heat/
PeaceHeat Up - Bolsters the body to enhance its physical capabilities for the user or a designated target.
Cold/
WarCold Shoulder - Create small shockwaves of Cold energy within a close range of the user.
Light/
WarMinor Smite - Infuse a normal weapon with small amounts of Soule Energy to make it more effective against Mirror Creatures.
Dark/
OrderShadow's Hand - Allow control of a small item or weapon without the need to physically wield it.
@Kronshi Hope this is helpful!