In addition to what everyone else said, the summons are pretty cool, as well. You can summon multiples of a creature as well as direct them all to attack a specific enemy if there's one fucker in a group that needs a jumping, and you can consume your summoned creatures to regain mana (or health, it's been a while since I played last and I can't remember exactly.)

There's also a spell that causes targets to explode into cheese. And it works on your summons. So, infinite cheese is neat, I suppose