What ARE all the death spells? Hm, let me get the player's Guide...

L5: Bane(all); L6: Rub(Single), Quake(all); L7: Brake(single); L8: Zap!(All), XXXX(Single).

Now, let me also mention that Zap!, Brake, and Rub are considered "best buys" in the original players guide... of course they also think that many of the heal and harm moves are not best buys, when I would certainly buy all of them, and let my Knight pick up any other spells.