What does the Voodoo Staff do?

[WizardHawk]

looks kind of like my friend whos characters first name is matthew (won't say the last). He is almost level 39 and maxed on staff. I'm not quite that far, but still I can take out up to level 20's with one shot on fire skull so high damage is not a problem with this weapon. I only have 4 dots on it too. See my guide here for more pictures of what the different spells do.