You just need Resurrect if you want to repeatedly kill things. I did this a bit in the Dark Forest looking for charms (buying them is easier and faster). It is also handy if you are close to another level before using the wishing well, the level-up jug in the imp world or before becoming the divine one. If you are going to get a boost to your level it is much more effective to first top off your experience points to level up, then get another full level from the bonus.
