I'm interested what kind of spells they are. Offensive can mean many things. Summoning a flame or blizzard? Being able to hurl objects at enemies telekinetically? Or just a simple strength and speed enhancement? Even something subtle like manipulating someone's senses to confuse or blind them could count as an offensive action.

[ He was thinking a little too much about this. And probably reading too many action books ]

Is there a list of the possible spells somewhere?