Theres a spell (forgive me, but I forgot the name) that essentially raises a character for 15 minutes. The character then falls dead, and within the round he casts Revivify.
Depending on how active a hand you want to take as a DM, this is not a hard one to deal with. Raising the dead, at least, bringing them back to full life, is the domain of the gods. I'll often have the spell simply not work (and still use up the material component.) Unless the character's god has a reason to want the person alive again, they're just not going to bother. Characters who are not devout don't even have a chance - spell wording to the contrary.
I've been consistent on this (and my players also don't face a parade of villains coming back from the dead...) and my players accept it. They've gotten into the habit of casting a Commune, or at the very least a divination, before going in for the resurrection options.