It can devolve into a "this guy is hurt so let's all gang up on him" sort of thing but the original was a last man standing so this is fairly predictable in most games but not all.
My all time favorite kill in a game was a combination of the stone that lets you cast through walls and doors, create a door or wall card, and lightning bolt. Lightning bolts bounce a number spaces equal to its spell power. The setup is to line yourself up so that you have yourself, another wizard, and a wall. You cast a wall between yourself and the wizard, making the new setup yourself, wall, other wiz, wall. You cast lightning bolt on the other side of the wall and charge it with enough energy to bounce back and forth and kill the other wizard. They have no clue you have these cards in your hand so they assume you're going to hurt them badly and they can retaliate since you are right next to them.
I've had someone suicide this way, trying to kill me. It was hilarious and sad because I survived with some counter spells of my own and I didn't get the kill on him (you have to directly kill a wizard to collect their piece as a trophy and score a point [2 points or last man standing being win conditions]). I had cast a curse on them forcing them to take damage when they drew cards and they decided to suicide and attempt to kill me as well.
Big Man form (or maybe it's stone form) is also fun because if I remember right you can still cast all spells. You also push people. You can cast a rose bush and push them into it. That sort of thing.