As stated above me, magick doesn't happen instantaneously. It is subtle. The only kind of offensive magick would be like curses our hexes. There are however spells for protection, and you can make a shield around you with energy. You could possibly reconfigure, reprogram, or reshape your aura to be spiked or repelling to others.
If you want to practice battle magick as you call it, you should also be very adept at defensive/protective and healing magick.