When you learn the recover spell, use Chattur'gha (Red) to recover
your health, Xel'lotath (Green) to recover your sanity, or Ulyaoth
(Blue) To recover your magic.
If you have a torch and you are face a large group of zombies,
swing the torch at them. They will die in one hit. You will have
to do a final blow quickly because they will disappear if you are
too slow. Note: This will only work on the normal common zombies.